Mathematics
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Robert Cardona
  • Member for 10 years, 1 month
  • Last seen more than a month ago
  • Barcelona, Spain
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About

Graduate Student in Pure Mathematics. Interested in

  1. Algebraic Topology & Homological Algebra (Chat Room)
  2. Algebraic & Topological K-Theory
  3. Functional Analysis, Index Theory & Differential Geometry (Chat Room)
  4. Algebraic Geometry (Chat Room), Commutative Algebra (Chat Room), Algebraic Stacks & Category Theory

On the side, I'm interested in learning about L-Theory, Homotopy Type Theory, Topos Theory and Constructive Mathematics.

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Top posts
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All Questions Answers
Score Newest
answer
36
A Banach space is reflexive if and only if its dual is reflexive
Mar 26, 2013
question
22
Show group of order $4n + 2$ has a subgroup of index 2.
Oct 31, 2012
answer
20
Show that $d_b(x,y)=\frac{d(x,y)}{1+d(x,y)}$ is a metric.
Feb 21, 2013
question
18
Show $\langle a^m \rangle \cap \langle a^n \rangle = \langle a^{\operatorname{lcm}(m, n)}\rangle$
Apr 15, 2012
answer
17
Real numbers equipped with the metric $ d (x,y) = | \arctan(x) - \arctan(y)| $ is an incomplete metric space
Feb 3, 2013
answer
17
If a connected open set is evenly covered, then its preimage is uniquely partitioned into slices
Oct 7, 2014
answer
16
Proving that the set of limit points of a set is closed
Jan 18, 2013
answer
16
Proof that $\mathbb Z[\sqrt{3}]$ is a Euclidean Domain
Feb 18, 2015
answer
15
The fiber of a covering space over a connected space has constant cardinality
Sep 21, 2014
answer
15
$\mathbb Z[\sqrt{-5}]$ is not a UFD
Feb 11, 2015
Top network posts
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33
Java Loop every minute
25
How can I extract multiple 7z files in folder at once in Ubuntu?
13
Arduino Hash Table/Dictionary
8
Verilog Barrel Shifter
6
Tikz Composite Midpoint Rule Horizontal Lines

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