Tong Zhang

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720 reputation

417

bio	website
	location	Sweden
	age	24
visits	member for	3 months
	seen	yesterday
stats	profile views	140

Graduate student in economics

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17 Answers

votes activity newest

2	Least squares fit linear algebra
2	$\cos$ not a contraction on $\mathbb R$
2	Proof that a and b in linear regression are random variables
2	Reduced Echelon Form Question
2	Is this claim about the Riemann integral accurate? (NEW POST)

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720 Reputation

+10	$\cos$ not a contraction on $\mathbb R$
+5	Recommendation for a book on dynamic systems
+2	What is the name of two points that share one coordinate?
+2	Linear Algebra: proof

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11 Questions

votes activity newest

5	Recommendation for a book on dynamic systems
3	Matrix theory textbook recommendation
2	A simple Riccati equation
2	Norm of this linear operator
1	Relationship betweeen commutativity of linear maps and their matrices

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29 Tags

6 linear-algebra × 8	2 integral
4 calculus × 2	2 homework
4 real-analysis × 2	2 trigonometry
2 integration × 2	1 statistics × 2
2 regression × 2	1 eigenvalues × 2

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8 Accounts

$Mathematics Stack Exchange$	Mathematics	720 rep	417
	Area 51	176 rep	4
	Mathematica	140 rep	19
$TeX - LaTeX Stack Exchange$	TeX - LaTeX	103 rep	4
	Stack Overflow	101 rep

20 Badges

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Constituent	Excavator
Caucus	Organizer
Enthusiast	Citizen Patrol
Reviewer	Custodian × 2
Strunk & White	Critic

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246 Votes Cast

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38	down		98	answer		7

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