Ernest William Hobson (27 October 1856 - 19 April 1933) was an English mathematician, now remembered mostly for his books, some of which broke new ground in their coverage in English of topics from mathematical analysis. He was Sadleirian Professor at the University of Cambridge from 1910 to 1931. October 27 is the 300th day of the year (301st in leap years) in the Gregorian Calendar, with 65 days remaining. ... 1856 was a leap year starting on Tuesday (see link for calendar). ... April 19 is the 109th day of the year in the Gregorian calendar (110th in leap years). ... 1933 was a common year starting on Sunday (link will take you to calendar). ... Analysis is that branch of mathematics which deals with the real numbers, complex numbers, and their functions. ... The Sadleirian Chair is a Professorship in pure mathematics at Cambridge University. ... The University of Cambridge is the second-oldest in the English-speaking world, after Oxford University. ...

He was born in Derby, and was educated at Derby School, the Royal College of Mines, and Christ's College, Cambridge. He became a Fellow of Christ's almost immediately after graduation. He made his way into research mathematics only gradually, becoming an expert in the theory of spherical harmonics. Derby (pronounced dar-bee ) is a city in the East Midlands of England. ... Full name Christs College Motto Souvent me Souvient Remember Me Often Named after Christ Previous names Gods-house (1437), Christs College (1505) Established 1505 Sister College Wadham College Master Prof. ... In mathematics, the spherical harmonics are an orthogonal set of solutions to Laplaces equation represented in a system of spherical coordinates. ...

His 1907 work on real analysis was something of a watershed in the British mathematical tradition; and was lauded by G. H. Hardy. It included material on general topology and Fourier series that was topical at the time; and included mistakes that were picked up later (for example by R. L. Moore). Real analysis is that branch of mathematical analysis dealing with the set of real numbers and functions of real numbers. ... G. H. Hardy Godfrey Harold Hardy (February 7, 1877 – December 1, 1947) was a prominent British mathematician, known for his achievements in number theory and mathematical analysis. ... In mathematics, general topology or point set topology is that branch of topology which studies elementary properties of topological spaces and structures defined on them. ... In mathematics, a Fourier series, named in honor of Joseph Fourier (1768-1830), is a representation of a periodic function (often taken to have period 2π — in a sense, the simplest case) as a sum of periodic functions of the form which are harmonics of ei x. ... Robert Lee Moore (1882‑1974) was an American mathematician, working in the field of general topology, and known as the founder of the Texas topology school of self-reliant research. ...

Works

• A Treatise on Trigonometry (1891)
• Theory of Functions of a Real Variable (1907)
• Squaring the Circle (1913)
• The Domain of Natural Science (1923) Gifford Lectures
• The Theory of Spherical and Ellipsoidal Harmonics (1931)