# Simon

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# 18 Questions

 6 Showing that an algebraic set is not isomorphic to $\mathbb{A}^1$ 6 Weaker/Stronger Topologies and Compact/Hausdorff Spaces 4 Finding the Vanishing Set of an Algebraic Set 3 Finding the Average Difference in Ability Between Two Teams 3 Completing a Character Table for a Group of Order 18

# 479 Reputation

 +10 Understanding Group Action +10 Proving that the multiplication on a formal derivation ring is associative +5 Proving that the multiplication on a formal derivation ring is associative +15 Let $\theta : V \rightarrow V$ be an idempotent linear map. $W = \text{ker }\theta$. if $\theta$ not identity map, prove $W \neq \{0_v\}$

 4 Prove that, $a_n \cdot b_n \to a \cdot b$ 3 Let $\theta : V \rightarrow V$ be an idempotent linear map. $W = \text{ker }\theta$. if $\theta$ not identity map, prove $W \neq \{0_v\}$ 3 How find this inequality $\sqrt{a^2+64}+\sqrt{b^2+1}$ 1 Understanding Group Action 1 Proving that the multiplication on a formal derivation ring is associative

# 27 Tags

 5 proof-verification × 2 1 ring-theory × 3 4 calculus × 2 1 summation × 2 4 linear-algebra × 2 1 group-actions 4 sequences-and-series 1 group-theory 3 inequality 0 ideals × 4

# 5 Accounts

 Mathematics 479 rep 210 TeX - LaTeX 160 rep 6 Computer Science 116 rep 4 Ask Different 101 rep 12 Programmers 101 rep