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| death_date = {{Death date and age|1885|12|22|1823|12|15}} ...920s. He was president of the [[Moscow Mathematical Society]] from 1866 to 1885. ...

His [[textbook]] on [[analytic geometry]] in 1897 was reviewed by [[Maxime Bôcher]].<ref>Maxime Bocher (1897) [https://p ...rote on [[Riemannian geometry]] and [[curvature of Riemannian manifolds]]. In 1903 he spoke on [[non-Euclidean geometry]]. ...

'''Eddy saturation''' and '''eddy compensation''' are phenomena found in the [[Southern Ocean]]. Both are limiting processes where eddy activity inc ...t the MOC and the ACC will help understand whether the uptakes will change in the future, which could have serious impact on the [[carbon cycle]]. This r ...

...hanics)|stress]]-difference as a function of [[strain (mechanics)|strain]] in dense sands.]] ...ress-dilatancy relation for static equilibrium of an assembly of particles in contact |journal=Proceedings of the Royal Society of London. Series A. Math ...

...e types of parallelohedron, first identified by [[Evgraf Fedorov]] in 1885 in his studies of crystallographic systems: the [[cube]], [[hexagonal prism]], ...ohedra form a [[Bravais lattice]], and every Bravais lattice can be formed in this way. ...

.../> He then began his research in [[psychophysics]] with [[Gustav Fechner]] in 1865.<ref name=":1" /> Delboeuf began his psychophysical experimentation on [[brightness]] in 1865 with [[Gustav Fechner]]. Delboeuf introduced the concept of sense dist ...

...wave]]s that are produced on the [[Earth]] by [[earthquakes]]. When guided in layers they are referred to as [[Lamb waves]], Rayleigh–Lamb waves, or gene ...udinal wave speeds for an isotropic elastic material. The speeds are shown in dimensionless units.]] ...

.... The earliest form of instant tea was developed in the United Kingdom in 1885.<ref name=":0">{{Cite book|title=Tea: Cultivation to Consumption|last=Wilso ...]] as well, instant tea is manufactured with the intent of being dissolved in water. ...

...ons such as the [[proportionator]] continue to make important improvements in the efficiency of stereological procedures. In addition to two-dimensional plane sections, stereology also applies to thre ...

...l applications in diverse fields of [[applied mathematics]] and [[computer science]], such as [[Configuration space (mathematics)|configuration spaces]],<ref> ...e following way: given two cells <math>\sigma</math> and <math>\tau</math> in <math>\mathcal{X}</math>, let <math>\kappa(\sigma,~\tau)</math> be the [[To ...

...formula <math> \exists x P(x)</math> expresses that there exists something in the domain which satisfies that property. A formula where a quantifier take ...[[negation]]. They can also be used to define more complex quantifiers, as in the formula <math> \neg \exists x P(x)</math> which expresses that nothing ...

{{distinguish|text = [[identity by descent]], another concept in population genetics referred to as "IBD"}} ...he city of Addis Ababa), they have declining genetic diversity as measured in average number of microsatellite repeats at each of the loci. The bottom ch ...

...hnique has found extensive use in improving the quality of these traps and in tailoring of both [[positron]] and [[antiproton]] (i.e. [[antiparticle]]) p ...dency of plasma to diffuse radially out of the trap. It has proven crucial in improving the quality and hence utility of trapped plasmas and trap-based b ...

...isotope [[biogeochemistry]] of Si aims to quantify the different Si fluxes in the global biogeochemical silicon cycle, to understand the role of [[biogen ...e Geochemistry |url=https://doi.org/10.2138/rmg.2017.82.8 |journal=Reviews in Mineralogy and Geochemistry |volume=82 |issue=1 |pages=289–344 |doi=10.2138 ...

...P probe head.png|thumbnail|right|Ball-pen probe used on [[tokamak]] CASTOR in 2004. A stainless steel collector moves inside a ceramic (boron nitride) sh ...yromagnetic radius and can reach the collector more easily than electrons (in blue).]] ...

...harmonics are easily excited." {{ISBN|9780299215804}}.</ref> To be played in concert the length of the tube must be trimmed to [[musical tuning|tune]] i ...rough turbulence" . In spite of being an aerophone, it is usually included in the percussion section of "sound effects" instruments, such as chains, [[cl ...

...alter">Walter (2018)</ref><ref name="warwick">Warwick (1992), (2012)</ref> In addition, it can be shown that the conformal group of the plane (correspond === Development in the 19th century === ...

...ossils of ''Pithecanthropus erectus'' (now ''Homo erectus'') found in Java in 1891. Estimated to be between 700,000 and 1,000,000 years old, at the time ...d in 1891 at [[Trinil]] – [[Ngawi Regency]] on the banks of the Solo River in [[East Java]], [[Indonesia]], one of the first known specimens of [[Homo er ...

In [[statistics]], the '''phi coefficient''' (or '''mean square contingency co ...introduced by biochemist [[Brian Matthews (biochemist)|Brian W. Matthews]] in 1975.<ref name="Matthews1975">{{cite journal|last=Matthews|first=B. W.|titl ...

...dity causes more harm than good, leading to a decrease in overall utility. In contrast, positive marginal utility indicates that every additional unit co ...or utility than the subsequent units, and there is a continuing reduction in satisfaction or utility for greater amounts. As consumption increases, the ...