Top network posts

• 21 Why is empty set an open set?
• 19 The preimage of continuous function on a closed set is closed.
• 14 constructing a genus 2 surface from 8-gon
• 13 Tensor Product is associative, distributive, not commutative.
• 11 The set of lines in $\mathbb{R}^2$ is a Möbius band?
• 10 What is an ordered basis?
• 9 The tangent space to the intersection is the intersection of the tangent spaces.
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