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Mathematics
Ravi Fernando's user avatar
Ravi Fernando's user avatar
Ravi Fernando's user avatar
Ravi Fernando
  • Member for 9 years, 4 months
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  • USA
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About

Postdoc at UIUC. Previously at Berkeley (PhD) and Stanford (undergrad). My research is in algebraic geometry (de Rham-Witt complexes), but I'm also interested in number theory, finite group theory, etc.

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36
Can you prove that proof-by-induction is invalid for the real interval [0, 1]?
Aug 20, 2022
22
A positive sequence which is arbitrarily small and diverging
Jun 9, 2018
20
how to prove that pullback preserves monomorphisms?
Oct 23, 2016
14
When $f(z) = 1/z$ and $g(z) = 1-z$, why is $f \circ g \circ f \circ g \circ f \circ g (z) = g \circ f \circ g \circ f \circ g \circ f (z) = z$?
Jul 21, 2022
13
Arithmetic progressions of sums of two squares
Jul 23, 2022
9
Characterization of ray class fields in terms of ramification alone
Aug 24, 2016
9
A functor $(Sch)^{op}\to(Sets)$ can not represented by a scheme?
Jul 22, 2022
9
Is there a reason the prime factors of $|M_{24}|$ are all one less than the factors of $24$?
Jan 22, 2022
8
Do non-graded rings exist?
Mar 10, 2015
8
Non-Existence of Three-Dimensional Numbers
Aug 21, 2020
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14
Packing pentominoes in a circle
6
Infinite sequence of consecutive checks allowing more pieces (say 9+ queens)
5
Winning position after move one?
5
How much material is needed to force the capture of a lone queen (for example in horde chess)?