* Mayr, Ernst.

* Ernst Mayr

The science that tries to reconstruct phylogenetic trees and thus discover clades is called phylogenetics or cladistics, the latter term being derived from " clade " by Ernst Mayr ( 1965 ).

Ernst Walter Mayr ( July 5, 1904 – February 3, 2005 ) was one of the 20th century's leading evolutionary biologists.

Ernst Mayr approached the problem with a new definition for the concept of species.

Nice dedicated her book to " My Friend Ernst Mayr.

* Mayr, Ernst.

* Vuilleumier, François, Mary LeCroy & Ernst Mayr ( 1992 ) New species of birds described from 1981 to 1990 Bulletin of the British Ornithologists ' Club Vol.

* 1930 ( by Ernst Hartert ) " List of birds collected by Ernst Mayr ".

* Ernst Mayr telling his life story at Web of Stories

*" 80 Years of Watching the Evolutionary Scenery " – by Ernst Mayr, Science.

* Ernst Mayr obituary in the Times

* Ernst Mayr obituary in the Economist

* Ernst Mayr and the Evolutionary Synthesis

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This was in contradiction to Ernst Haeckel's theory that the complete phylogeny of a species would be repeated during embryonic development, including generation of the first nucleated cell from a " Monerula ", a structureless mass of primordial mucus (" Urschleim ").

While this theory, first propounded by Ernst von Dobschütz and Rudolf Bultmann, is not universally accepted, Amos Wilder writes that, " it is at least clear that there are considerable and sometimes continuous elements in the epistle whose style distinguishes them from that of the author both with respect to poetic structure and syntactic usage.

In 1922, the Estonian astronomer Ernst Öpik gave a distance determination which supported the theory that the Andromeda Nebula is indeed a distant extra-galactic object.

As a philosopher of science Ernst Mach was a major influence on logical positivism, and through his criticism of Isaac Newton, a forerunner of Einstein's theory of relativity.

In 1703 Georg Ernst Stahl, professor of medicine and chemistry at Halle, proposed a variant of the theory in which he renamed Becher's terra pinguis to phlogiston, and it was in this form that the theory probably had its greatest influence.

During the late 19th century, Ernst Haeckel's recapitulation theory, or " biogenetic fundamental law ", was widely accepted.

Their paper built upon Ernst Mayr's theory of geographic speciation, I. Michael Lerner's theories of developmental and genetic homeostasis, as well as their own empirical research.

This theory was popularized by Ernst Mayr in his 1954 paper " Change of genetic environment and evolution ," and his classic volume Animal Species and Evolution ( 1963 ).

The psychometrician L. L. Thurstone, founder and first president of the Psychometric Society in 1936, developed and applied a theoretical approach to measurement referred to as the law of comparative judgment, an approach that has close connections to the psychophysical theory of Ernst Heinrich Weber and Gustav Fechner.

According to Ernst von Glasersfeld, Jean Piaget is " the great pioneer of the constructivist theory of knowing.

Darwin's theory of evolution is based on key facts and the inferences drawn from them, which biologist Ernst Mayr summarised as follows:

He was a leading member of the Frankfurt School of critical theory, whose work has come to be associated with thinkers such as Ernst Bloch, Walter Benjamin, Max Horkheimer and Herbert Marcuse, for whom the work of Freud, Marx and Hegel were essential to a critique of modern society.

In 1908, Ernst Zermelo proposed an axiomatization of set theory that avoided the paradoxes of naive set theory by replacing arbitrary set comprehension with weaker existence axioms, such as his axiom of separation ( Aussonderung ).

For his part, Ernst Zermelo in his ( 1908 ) A new proof of the possibility of a well-ordering ( published at the same time he published " the first axiomatic set theory ") laid claim to prior discovery of the antinomy in Cantor's naive set theory.

Starting in 1871, Frege continued his studies in Göttingen, the leading university in mathematics in German-speaking territories, where he attended the lectures of Alfred Clebsch ( 1833 – 1872 ) ( analytical geometry ), Ernst Christian Julius Schering ( 1824 – 1897 ) function theory, Wilhelm Eduard Weber ( 1804 – 1891 ) ( physical studies, applied physics, Eduard Riecke ( 1845 – 1915 ) ( theory of electricity, and Hermann Lotze ( 1817 – 1881 ) ( philosophy of religion ).

Ernst Zermelo was one of the major advocates of such a view ; he also developed much of axiomatic set theory.

The concept of a biotope was first advocated by Ernst Haeckel ( 1834-1919 ): a German zoologist famous for the recapitulation theory.

Ernst Haeckel ( 1866 ), in his endeavour to produce a synthesis of Darwin's theory with Lamarckism and Naturphilosophie, proposed that " ontogeny recapitulates phylogeny ," that is, the development of the embryo of every species ( ontogeny ) fully repeats the evolutionary development of that species ( phylogeny ), in Geoffroy's linear model rather than Darwin's idea of branching evolution.

* 1942 Ernst Stueckelberg introduces the propagator to positron theory and interprets positrons as negative energy electrons moving backwards through spacetime

* 1694 – 1734 – Georg Ernst Stahl names Becher's combustible earth as phlogiston and develops the theory