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71Challenge hypothesis — The challenge hypothesis outlines the dynamic relationship between testosterone and aggression in mating contexts. It proposes that testosterone promotes aggression when it would be beneficial for reproduction, such as mate guarding, or… …
72Generalized Riemann hypothesis — The Riemann hypothesis is one of the most important conjectures in mathematics. It is a statement about the zeros of the Riemann zeta function. Various geometrical and arithmetical objects can be described by so called global L functions, which… …
73Extraterrestrial hypothesis — [ 200px|thumb|Right|Amateur photographs from Sheffield, England, 4 March 1962 Minneapolis, Minnesota, 20 October 1960. Taken from a 1997 CIA training manual. [Haines, Gerald K, [https://www.cia.gov/csi/studies/97unclass/ufo.html A Die Hard Issue …
74Dirac large numbers hypothesis — Paul Dirac The Dirac large numbers hypothesis (LNH) is an observation made by Paul Dirac in 1937 relating ratios of size scales in the Universe to that of force scales. The ratios constitute very large, dimensionless numbers: some 40 orders of… …
75CLAW hypothesis — The CLAW hypothesis proposes a feedback loop that operates between ocean ecosystems and the Earth s climateCharlson, R. J., Lovelock, J. E., Andreae, M. O. and Warren, S. G. (1987). [http://www.nature.com/nature/journal/v326/n6114/abs/326655a0.htm… …
76De Broglie hypothesis — In physics, the de Broglie hypothesis (pronounced /brœj/, as French breuil, close to broy ) is the statement that all matter (any object) has a wave like nature (wave particle duality). The de Broglie relations show that the wavelength is… …
77Court Jester Hypothesis — The Court Jester hypothesis is a term coined by University of California, Berkeley professor Anthony D. Barnosky in 1999, that describes the antithesis of the Red Queen Hypothesis in evolutionary theory. It refers to the idea that abiotic forces… …
78Hygiene hypothesis — In medicine, the Hygiene Hypothesis states that a lack of early childhood exposure to infectious agents, symbiotic microorganisms (e.g., gut flora or probiotics), and parasites increases susceptibility to allergic diseases by suppressing natural… …
79Random walk hypothesis — The random walk hypothesis is a financial theory stating that stock market prices evolve according to a random walk and thus the prices of the stock market cannot be predicted. It has been described as jibing with the efficient market hypothesis …
80Variability hypothesis — The variability hypothesis originated in the early nineteenth century with Johann Meckel who argued that females are more variable than males. Because he considered males to be the superior animal Meckel concluded that variation was a sign of… …
