H. F. Baker

Henry Frederick Baker FRSFRSE (3 July 1866 – 17 March 1956) was a British mathematician, working mainly in algebraic geometry, but also remembered for contributions to partial differential equations (related to what would become known as solitons), and Lie groups.

Early life

He was born in Cambridge the son of Henty Baker, a butler, and Sarah Ann Britham.

Education

He was educated at The Perse School before winning a scholarship to St John's College, Cambridge in October 1884. Baker graduated as Senior Wrangler in 1887, bracketed with 3 others.

Career

Baker was elected Fellow of St John's in 1888 where he remained for 68 years.

In June, 1898 he was elected a Fellow of the Royal Society. In 1911, he gave the presidential address to the London Mathematical Society.

In January 1914 he was appointed Lowndean Professor of Astronomy.

Gordon Welchman recalled that in the 1930s before the war Dennis Babbage and himself were members of a group of geometers known as Professor Baker’s "Tea Party", who met once a week to discuss the areas of research in which we were all interested. .

HF

HF, Hf or hf can refer to:

Biology

Chemistry

Computing

Technology

Medicine

Organizations and groups

H1F0

H1 histone family, member 0 is a member of the histone family of nuclear proteins which are a component of chromatin. In humans, this protein is encoded by the H1F0 gene.

References

Fluoronium

Fluoronium (systematically named fluoranium, and μ-fluorido-dihydrogen(1+)) is an inorganic cation with the chemical formula H
2F+
(also written [H
2F]+
). It contributes no colour to fluoronium salts. It is a very strong acid, and dilute fluoronium solutions are corrosive and can attack the skin. It can be formed by protonation or self-ionic dissociation of hydrogen fluoride:

or

The fluoronium ion is isoelectronic with water and the amide ion.

Whereas stable organic structures containing other halonium ions have been known since 1970, a fluoronium analog was not known until 2013 and even then only as an unstable short-lived entity.

The kinetic instability of the fluoronium ion is responsible for the extreme acidity of fluoroantimonic acid. The antimony pentafluoride molecule sequesters the fluoride ion produced by the homoassociation of hydrogen fluoride, leaving the fluoronium ion unable to revert to the more stable neutral hydrogen fluoride.

References