Feanor

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2,867 reputation

419

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	location	Krakow, Poland
	age	23
visits	member for	2 years
	seen	11 hours ago
stats	profile views	174

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89 Answers

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14	If $f(x)f(y)=f(\sqrt{x^2+y^2})$ how to find $f(x)$
8	What is the sense of the equality sign =?
7	Among all shapes with the same area, a circle has the shortest perimeter
7	Why is 1 raised to infinity Not defined and not “1”
7	Is there a minimal diverging series?

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2,867 Reputation

+10	Is closure of a semigroup again a semigroup?
+10	Decomposition of graph
+55	Convergence of sequence
+15	Probability of selecting identical objects from 2 partially overlapping groups

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30 Questions

votes activity newest

12	Why is integer approximation of a function interesting?
9	Should $\mathbb{N}$ contain $0$? [closed]
9	How much do idempotent ultrafilters generate in terms of semigroups?
7	Killing functions by successive differentiation.
6	Do balls optimize the boundary area for a fixed volume?

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120 Tags

31 real-analysis × 17	12 convergence × 3
21 calculus × 3	11 geometry × 5
14 functions × 5	11 number-theory × 5
14 sequences-and-series × 5	10 linear-algebra × 11
13 asymptotics × 4	10 divergent-series × 2

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10 Accounts

$Mathematics Stack Exchange$	Mathematics	2,867 rep	419
	Physics	155 rep	3
	Mathematica	125 rep	4
	Super User	101 rep	1
	Meta Stack Overflow	101 rep	1

22 Badges

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Revival	Informed
Yearling × 2	Tumbleweed
Caucus	Civic Duty
Suffrage	Nice Question
Mortarboard	Promoter

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535 Votes Cast

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