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In algebraic geometry, a relative cycle is a type of algebraic cycle on a scheme. In particular, let X {\displaystyle X} be a scheme of finite type over
Relative_cycle
Homology for a pair of topological spaces
'_{n+1}.} One says that relative homology is given by the relative cycles, chains whose boundaries are chains on A, modulo the relative boundaries (chains
Relative_homology
Theorem in algebraic topology
affecting the homology class of the cycle. This allows us to show that the inclusion map is an isomorphism, as each relative cycle is equivalent to one that avoids
Excision_theorem
Periodic change in the Sun's activity
The Solar cycle, also known as the solar magnetic activity cycle, sunspot cycle, or Schwabe cycle, is a periodic 11-year change in the Sun's activity
Solar_cycle
Concept from algebraic geometry
widely used. Working with families of cycles over a base, or using cycles in arithmetic situations, requires a relative setup. Let ϕ : X → S {\displaystyle
Algebraic_cycle
Rocket engine operation method
staged combustion cycle, propellant flows through multiple combustion chambers, and is thus combusted in stages. The main advantage relative to other rocket
Staged_combustion_cycle
Frequency change of a wave for observer relative to its source
equivalently, the period of a wave in relation to an observer who is moving relative to the source of the wave. It is named after Christian Doppler, who described
Doppler_effect
Representation of biological membrane depolarization
In membrane biology, the Hodgkin cycle is a key component of membrane physiology that describes bioelectrical impulses, especially prevalent in neural
Hodgkin_cycle
Model that is used to predict the performance of steam turbine systems
The Rankine cycle is an idealized thermodynamic cycle describing the process by which certain heat engines, such as steam turbines or reciprocating steam
Rankine_cycle
Sanskrit term for a year
this cycle has been given a name. Once all 60 samvatsara are over, the cycle starts over again. This cycle of 60 samvatsara is based on the relative positions
Samvatsara
Elapsed fraction of a cycle of a periodic function
(such as time) is an angle-like quantity representing the fraction of the cycle covered up to t {\displaystyle t} . It is expressed in such a scale that
Phase_(waves)
Concentration of water vapour in the air
employed: absolute, relative, and specific. Absolute humidity is the mass of water vapor per volume of air (in grams per cubic meter). Relative humidity, often
Humidity
Global climate cycles
precesses in space, in an irregular fashion, completing a full cycle in about 112,000 years relative to the fixed stars. Apsidal precession occurs in the plane
Milankovitch_cycles
Activity of riding a bicycle
position. Note that overuse is a relative term, and capacity varies greatly between individuals. Someone starting out in cycling must be careful to increase
Cycling
Light-independent reactions in photosynthesis
The Calvin cycle, bio synthetic phase, dark reactions, or photosynthetic carbon reduction (PCR) cycle of photosynthesis is a series of chemical reactions
Calvin_cycle
Basic instruction cycle in a computer
The instruction cycle (also known as the fetch–decode–execute cycle, or simply the fetch–execute cycle) is the cycle that the central processing unit (CPU)
Instruction_cycle
Nuclear fusion reaction
In astrophysics, the carbon–nitrogen–oxygen cycle (CNO cycle), sometimes called Bethe–Weizsäcker cycle after Hans Albrecht Bethe and Carl Friedrich von
CNO_cycle
Relationship among tones of the chromatic scale
(sometimes also cycle of fifths) organizes the twelve pitch classes of the chromatic scale in a cycle of ascending perfect fifths. Since the cycle ascends in
Circle_of_fifths
Shape of the Moon's sunlit portion as viewed from Earth
as viewed from Earth. Because the Moon is tidally locked to Earth, the cycle of phases takes one lunar month and moves across the same side of the Moon
Lunar_phase
Overview of bicycle safety concerns
paths and sidewalks". They found that "the relative rates for falls and injuries suggest it is safest to cycle on-road followed by off-road paths and trails
Safety of cycling infrastructure
Safety_of_cycling_infrastructure
Relative nonlinearity is a coexistence mechanism that maintains species diversity via differences in the response to and effect on variation in resource
Relative_nonlinearity
Topics referred to by the same term
11-year cycle of sunspot and energy output Axial precession (Lunisolar precession), a 21,000 year cycle in the orientation of earth relative to the sun
Geosolar_cycle
1460 year calendar cycle of ancient Egypt
The Sothic cycle or Canicular period (Ancient Egyptian: spdt or Sopdet, 'Triangle'; Ancient Greek: Σῶθις, Sō̂this) is a period of 1,461 Egyptian civil
Sothic_cycle
Syndrome of disordered eating, oligomenorrhoea and osteopenia
Relative energy deficiency in sport (RED-S) is a syndrome in which disordered eating (or low energy availability), amenorrhoea/oligomenorrhoea (in women)
Relative energy deficiency in sport
Relative_energy_deficiency_in_sport
Natural processes of carbon exchange
The carbon cycle is a part of the biogeochemical cycle where carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere
Carbon_cycle
Chemical transfer pathway between Earth's biological and non-biological parts
biogeochemical cycles include the carbon cycle, the nitrogen cycle and the water cycle. In each cycle, the chemical element or molecule is transformed and cycled by
Biogeochemical_cycle
Natural capability to produce offspring
and FSH hormones which (in a cycle without pregnancy) causes the corpus luteum to atrophy, and menses to begin the cycle again. Peak fertility occurs
Fertility
Mass of a stationary electron
values no longer vary (given the relative uncertainty of the measurement, 2.1×10−9): this happens by the fourth cycle of iterations for these results,
Electron_mass
Release of egg cells from the ovaries
part of the menstrual cycle in female vertebrates where the egg cells are released from the ovaries as part of the ovarian cycle. In female humans ovulation
Ovulation
Thermodynamic cycle
The Cromer cycle is a thermodynamic cycle that uses a desiccant to interact with higher-relative-humidity air leaving a cold surface. When a system is
Cromer_cycle
Internal combustion engine type
A four-stroke (also four-cycle) engine is an internal combustion engine (ICE or IC engine) in which the piston completes four separate strokes while turning
Four-stroke_engine
Calendar used for religious purposes
for solar cycle and adjustment of lunar cycles about every 32-33 months, but differ in their relative emphasis to moon cycle or the sun cycle and the names
Hindu_calendar
Music sales rankings by the trade magazine Billboard
The Billboard charts tabulates the relative weekly popularity of songs and albums in the United States and globally. The results are published in Billboard
Billboard_charts
Variation on the Rankine thermodynamic cycle
engineering, the Organic Rankine cycle (ORC) is a type of thermodynamic cycle. It is a variation of the Rankine cycle named for its use of an organic,
Organic_Rankine_cycle
Economic measure of US dollar exchange rates
"Dixie") is an index (or measure) of the value of the United States dollar relative to a basket of foreign currencies, often referred to as a basket of U.S
U.S._Dollar_Index
Control mechanism in the eukaryotic cell cycle
Cell cycle checkpoints are control mechanisms in the eukaryotic cell cycle which ensure its proper progression. Each checkpoint serves as a potential
Cell_cycle_checkpoint
Unisys operating system
F-cycle is a number from 0 to 999 that allows multiple generations of a file. These may be referenced by relative numbers: (+1) next or new cycle, (-1)
OS_2200
Air mass forming over a large body of water
often goes through a daily (diurnal) cycle. This cycle begins at night and into early morning. At this point in the cycle a temperature inversion is formed
Marine_layer
Biogeochemical cycle
The ozone–oxygen cycle is the process by which ozone is continually regenerated in Earth's stratosphere, converting ultraviolet radiation (UV) into heat
Ozone–oxygen_cycle
International safety standard for automotive electrical and electronic systems
standards for a safety life cycle for the development and production of individual automotive products. The ISO 26262 safety life cycle described in the next
ISO_26262
Sentence composed of homonyms
Language: Adventures in Word and Thought. In meaning, the sentence describes a cycle of violence among bovids: "Buffalonian bison that other Buffalonian bison
Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo
Buffalo_buffalo_Buffalo_buffalo_buffalo_buffalo_Buffalo_buffalo
Pattern with a period of one day
A diurnal cycle (or diel cycle) is any pattern that recurs every 24 hours as a result of one full rotation of the planet Earth around its axis. Earth's
Diurnal_cycle
Penetrative sexual activity for reproduction or sexual pleasure
of estrus (the most fertile period of time in the female's reproductive cycle), which increases the chances of successful impregnation. However, bonobos
Sexual_intercourse
Repeated joining and separation of Earth's continents
crust material found today dates to 4 Ga, showing the relative brevity of the regional Wilson cycles compared to the whole-planetary pulses seen in the arrangement
Supercontinent_cycle
Lunar phase when the Moon is fully illuminated
size of the full moon vary in a cycle of just under 14 synodic months, which has been referred to as a full moon cycle. When the Moon moves into Earth's
Full_moon
Unit of time based on Earth's orbit
of roughly similar duration, such as the lunar year (a roughly 354-day cycle of twelve of the Moon's phases – see lunar calendar), as well as periods
Year
Aircraft refrigeration
An air cycle machine (ACM) is the refrigeration unit of the environmental control system (ECS) used in pressurized gas-turbine–powered aircraft. Normally
Air_cycle_machine
Excess of supply over demand of products being offered to an economic market
to the same coin – excess supply is only relative to a given demand, and insufficient demand is only relative to a given supply – and thus consider overproduction
Overproduction
Methods for estimating a realistic date for an event or object
isotope ratio cycle Melt inclusions Morphology (archaeology) Nitrogen dating Palynology, the study of modern-dated pollens for the relative dating of archaeological
Chronological_dating
Time an astronomical object takes to complete one orbit around another object
period, determined by a 360° revolution of one body around its primary relative to the fixed stars projected in the sky. For the case of the Earth orbiting
Orbital_period
representable sheaves are interesting and useful objects; while presheaves of relative cycles are not representable, their associated h-sheaves are representable
H_topology
Length of time
it refers to the time required for the equinoxes to complete one full cycle around the ecliptic, a period of approximately 25,800 years. According to
Great_Year
Group of insects in the order Lepidoptera
insects, butterflies undergo complete metamorphosis, meaning that their life cycle comprises four stages. Winged adults lay eggs on plant foliage on which
Butterfly
Set of processes exchanging nutrients between parts of a system
nutrients is cyclic. Mineral cycles include the carbon cycle, sulfur cycle, nitrogen cycle, water cycle, phosphorus cycle, oxygen cycle, among others that continually
Nutrient_cycle
Methodology for assessing environmental impacts
cycle assessment (LCA), also known as life cycle analysis, is methodology for assessing the impacts associated with all the stages of the life cycle of
Life-cycle_assessment
Especially high spring tide
of sea levels. Tides are driven by the relative positions of the Earth, Sun, Moon, land formations, and relative location on Earth. In the lunar month
King_tide
Checking software against expectations
used to show the relative expense of fixing defects There are opposing views on the applicability of studies used to show the relative expense of fixing
Software_testing
Female relative who is sibling of one's parent
sibling of a parent. Aunts who are related by birth are second-degree relatives. Alternate terms include auntie or aunty. Aunt, auntie, and aunty also
Aunt
Measure of sunspot activity
The Wolf number (also known as the relative sunspot number or Zürich number) is a quantity that measures the number of sunspots and groups of sunspots
Sunspot_number
Natural internal process that regulates the sleep-wake cycle
A circadian rhythm (/sərˈkeɪdiən/), or circadian cycle, is a natural oscillation that repeats roughly every 24 hours. Circadian rhythms can refer to any
Circadian_rhythm
Cyclical change in a species' population
A population cycle in zoology is a phenomenon where populations rise and fall over a predictable period of time. There are some species where population
Population_cycle
Statistical bias
The term relative age effect (RAE), also known as birthdate effect or birth date effect, is used to describe a bias, evident in the upper echelons of youth
Relative_age_effect
Hypothesized cycle-like phenomena in the modern world economy
economic cycle) are hypothesized cycle-like phenomena in the modern world economy. The phenomenon is closely connected with the technology life cycle. It is
Kondratiev_wave
Species of fungus
Balajee SA, Dyer PS (July 2013). "Discovery of a sexual cycle in Aspergillus lentulus, a close relative of A. fumigatus". Eukaryotic Cell. 12 (7): 962–9. doi:10
Aspergillus_lentulus
Liturgical calendar used within Eastern Orthodox churches
moveable feasts are generally relative to Pascha (Easter), and so the cycle of moveable feasts is referred to as the Paschal cycle. The following list of dates
Eastern Orthodox liturgical calendar
Eastern_Orthodox_liturgical_calendar
Metric used to measure the speed of elevation gain in cycling
and cycling coach Michele Ferrari, is the speed of elevation gain, usually stated in units of metres per hour. VAM is a parameter used in cycling as a
VAM_(bicycling)
1983 novella by Stephen King
Cycle of the Werewolf is a horror novella by American writer Stephen King, featuring illustrations by comic-book artist Bernie Wrightson. Each chapter
Cycle_of_the_Werewolf
Species of small, biologically immortal jellyfish
of environmental changes or injury. This ability to reverse the biotic cycle (in response to adverse conditions) is unique in the animal kingdom. It
Turritopsis_dohrnii
Change of rotational axis in an astronomical body
gradual shift in the orientation of Earth's axis of rotation. It has a cycle of approximately 26,000 years, tracing out a double cone with a half-aperture
Axial_precession
Study of how people choose between payoffs at different times
In economics, intertemporal choice is the study of the relative value people assign to two or more payoffs at different points in time. This relationship
Intertemporal_choice
Form of competitive indoor cycling
Artistic cycling is a form of competitive indoor cycling in which athletes perform tricks (called exercises) for points on specialized, fixed-gear bikes
Artistic_cycling
Satellite navigation technique used to enhance the precision of position data
number of whole carrier cycles between the satellite and the rover and adding the phase difference. Determining the number of cycles is non-trivial, since
Real-time kinematic positioning
Real-time_kinematic_positioning
Creation of chemical elements within stars
about the mass of the Sun. The second process, the carbon–nitrogen–oxygen cycle, which was also considered by Carl Friedrich von Weizsäcker in 1938, is
Stellar_nucleosynthesis
Periodic shedding of the uterine lining
primarily in humans and close relatives such as chimpanzees. Females of other species of placental mammals undergo estrous cycles, in which the endometrium
Menstruation_(mammal)
Bikeway separated from motorized traffic
A bike path or a cycle path is a bikeway separated from motorized traffic and dedicated to cycling or shared with pedestrians or other non-motorized users
Bike_path
Deposit that forms on nuclear fuel
unidentified deposit. Especially in pressurized water reactors, the coolant cycle is subject to extreme processes. The water reaches temperatures above 286 °C
Crud_(radioactive_waste)
Largest species of rodents
lesser capybara, it constitutes the genus Hydrochoerus. Its other close relatives include guinea pigs and rock cavies, and it is more distantly related
Capybara
Global climate phenomenon
between El Niño, La Niña and neutral states has an irregular pattern but cycles approximately every two to seven years with varying intensity. The strength
El_Niño–Southern_Oscillation
Ecological metric
cyanobacteria have been shown to be a significant contributor in the global carbon cycle, accounting for 20–30% of Earth's photosynthetic productivity and convert
Photosynthetic_efficiency
Third planet from the Sun
Milankovitch cycles. The annual change in the Earth–Sun distance causes an increase of about 6.8% in solar energy reaching Earth at perihelion relative to aphelion
Earth
Framework of spaced bars that are parallel to or cross each other
measured in distance (e.g., 0.1 mm). Duty Cycle is the relative thickness of high and low lines. The duty cycle is the ratio of the width of the low line
Grating
Expansion and contraction of leverage during the business cycle
leverage cycle lead to a huge redistribution of wealth and change in inequality. During a good shock, all optimists become extremely rich relative to lenders
Leverage_cycle
Form of song
a characteristic ambitus, and also characteristic intervallic patterns relative to a referential mode final, incipits and cadences, the use of reciting
Gregorian_chant
King Arthur and order of chivalry in Arthurian romance
outside of Europe. Their ranks often include Arthur's close and distant relatives, such as Agravain, Gaheris and Yvain, as well as his reconciled former
Knights_of_the_Round_Table
System that regulates the formation of blocks on a blockchain
sequences Puzzles Diffie-Hellman–based puzzle Moderate Mbound Hokkaido Cuckoo Cycle Merkle tree–based Guided tour puzzle protocol partial match of a hash function[citation
Proof_of_work
Device that cools air through the evaporation of water
conditioning systems, which use vapor-compression or absorption refrigeration cycles. Evaporative cooling exploits the fact that water will absorb a relatively
Evaporative_cooler
Tendency in the insurance industry
An insurance cycle, also known as an underwriting cycle, is a term describing the tendency of the insurance industry to swing between profitable and unprofitable
Insurance_cycle
Biological measurement technique
to provide information about relative frequency (percentage) of cells in the major phases of the cell cycle. Cell cycle anomalies revealed on the DNA
Cell_cycle_analysis
Star opposite Jupiter in Chinese zodiac
divisions of the Jovian orbital cycle, rather than as in the western zodiac—the apparent motion of the sun relative to the celestial sphere. The star
Tai_Sui
Facilities for use by cyclists
Cycling infrastructure is all infrastructure that cyclists are permitted to use. These include bike paths, bike lanes, cycle tracks, rail trails, shared-use
Cycling_infrastructure
system. The daytime cycle begins at dawn 12:00 (6:00:00 AM EAT) and ends at dusk 11:59:59 (5:59:59 PM EAT). The nighttime cycle begins at dusk 12:00
Time_in_Ethiopia
Biogeochemical cycle
The silica cycle is the biogeochemical cycle in which biogenic silica is transported between the Earth's systems. Silicon is one of the most abundant
Silica_cycle
Central nervous system stimulant
amphetamine administration relative to males, effects that may be modulated by fluctuating estradiol levels across the estrous cycle or more broadly by adult
Amphetamine
Type of small omnivorous rodent
Voles are small rodents that are relatives of lemmings and hamsters, but with a stouter body; a longer, hairy tail; a slightly rounder head; smaller eyes
Vole
Song cycle by Modest Mussorgsky
Death (Russian: Песни и пляски смерти, Pesni i plyaski smerti) is a song cycle for voice (usually bass or bass-baritone) and piano by Modest Petrovich
Songs_and_Dances_of_Death
American business people
Liberty Principles PAC, Americas PAC, and Scott Walker. In the 2014 election cycle, the Uihleins made at least $5 million in political contributions, mostly
Richard_and_Elizabeth_Uihlein
Eukaryotes other than animals, plants or fungi
and many algae. Depending on the relative growth and lifespan of one generation compared to the other, life cycles may be haploid-dominant, diploid-dominant
Protist
1978 Iranian film
The Cycle (Persian: دایرهٔ مینا, Dayereh-ye Mina, also Romanized as Dāyere-ye Minā) is a 1975 Iranian drama film directed and written by Dariush Mehrjui
The_Cycle_(1975_film)
Time for Moon to complete one rotation on its axis
of this synchronicity, the cycle of lunar phases observed from Earth are the lunar day on the near side of the Moon. Relative to the fixed stars on the
Lunar_day
Change in sea level due to gravity
the moon on the other side. The earth's rotation relative to this shape causes the daily tidal cycle. The ocean surface tends toward this equilibrium
Tide
travel, tourism, insurance
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