### Questions (59)

 5 Proof that every polyhedron admits a triangulation 3 Defining along pullback preserves image in a regular category. 3 Let $L = \{<\}$ prove there is no $L$-theory that has precisely the well ordered sets as models 3 Proving a continuous function between two topological spaces must be constant. 3 Total derivative not unique?

### Reputation (948)

 +5 For $C$ small and $D$ locally small, $D^C$ is locally small. Why is the assumption '$D$ locally small' necessary? +5 Algebraic topology or algebraic geometry for logic +10 change of variables in a differential equation with partial derivatives? -2 If $n$ is odd, then there are exactly two conjugacy classes of n-cycles in $A_n$ each of which contains $(n - 1)!/2$ elements.

 4 $1-x+x^2-x^3+..(-1)^nx^n$ 3 Evaluate an indefinite integral 2 change of variables in a differential equation with partial derivatives? 2 Why do we flip the fraction if the top most number in fraction is $1$? 2 Number of paths between two points

### Tags (67)

 7 real-analysis × 8 3 combinatorics × 2 4 summation 3 integration 4 geometric-progressions 2 ordinary-differential-equations × 4 3 algebra-precalculus × 3 2 limits × 3 3 linear-algebra × 3 2 elementary-set-theory × 2

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