Henno Brandsma

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9,567 reputation

919

bio	website	at.yorku.ca/cgi-bin/bbqa
	location	Netherlands
	age	43
visits	member for	2 years, 5 months
	seen	10 hours ago
stats	profile views	1,006

Got a PhD in topology in 98, now a cryptographer.

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255 Answers

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26	Elementary proof that $\mathbb{R}^n$ is not homeomorphic to $\mathbb{R}^m$
14	What are the issues in modern set theory?
10	An open set in a space is homeomorphic to $S^1$. Is the set close?
10	Continuity and Closure
10	Continuous functions on a compact set

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9,567 Reputation

+10	A first countable pseudocompact extension space
+10	Second Countability of Euclidean Spaces
+25	Finitely additive measure on $\mathbb R$
+10	If $C_b(X)$ separable then $X$ is a compact metrizable space

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79 Tags

597 general-topology × 201	32 reference-request × 6
58 real-analysis × 21	30 compactness × 10
49 homework × 27	22 cryptography × 9
47 set-theory × 10	19 analysis × 9
36 metric-spaces × 18	19 measure-theory × 7

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$Mathematics Stack Exchange$	Mathematics	9,567 rep	919
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	Super User	549 rep	34
	Cryptography	539 rep	14
	Programmers	241 rep	11

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98 Votes Cast

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1	down		89	answer		7

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