# Hee Kwon Lee

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bio website location Yuseong-gu, Daejeon, Korea age 35 member for 2 years, 4 months seen yesterday profile views 879

I am studying Algebra.

# 143 Questions

 7 Kunneth formula on product of spheres 7 Is $\mathbb Z _p^*=\{ 1, 2, 3, … , p-1 \}$ a cyclic group? 6 Cup product on torus 6 Triangle with $\sin^2 A +\sin^2 B =\sin C$ 4 ${\bf R}$ and ${\mathbb R}$ [closed]

# 3,335 Reputation

 +10 Killing Vector Field determined by one point +5 The Lefschetz Fixed Point Theorem in Coefficient Ring $G$ +10 Minimum of two metrics is metric +5 Universal Coefficient Theorem for Coefficient Group ${\bf R}$

# 123 Answers

 6 Compute $\displaystyle \lim_{x \rightarrow -3} \frac{\frac{1}{3} + \frac{1}{x}}{3+x}$ 6 Is the set of rationals between $\sqrt{2}$ and $\sqrt{3}$ open or closed in $\mathbb Q$? 6 Minimum of two metrics is metric 5 $\displaystyle\lim_{x\to -8} \frac {8 − |x|} {8 + x} \$ How do I solve? 5 Exponent of matrix

# 114 Tags

 30 linear-algebra × 27 10 inequality × 6 26 calculus × 30 9 multivariable-calculus × 13 23 limits × 11 8 real-analysis × 21 18 differential-geometry × 42 6 riemannian-geometry × 30 16 general-topology × 5 6 analysis × 6

# 5 Accounts

 Mathematics 3,335 rep 1628 MathOverflow 111 rep 3 Stack Overflow 101 rep TeX - LaTeX 101 rep 1 Area 51 101 rep 1

# 29 Badges

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