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### Questions (58)

 10 Krull dimension of $\mathbb{C}[x_1, x_2, x_3, x_4]/\left< x_1x_3-x_2^2,x_2 x_4-x_3^2,x_1x_4-x_2 x_3\right>$ 9 Tensoring is thought as both restricting and extending? 7 a flat deformation 4 Counting the number of elements in the set $\{ x^{13n}:n \mbox{ is a positive integer}\}$ under certain conditions 4 If the special fiber of a flat morphism is reduced, then any other fiber is reduced?

### Reputation (867)

 +5 a flat deformation +5 Tensoring is thought as both restricting and extending? +5 Blow-up along an ideal sheaf +5 Krull dimension of $\mathbb{C}[x_1, x_2, x_3, x_4]/\left< x_1x_3-x_2^2,x_2 x_4-x_3^2,x_1x_4-x_2 x_3\right>$

 5 How to solve $t$ in $x = t - \sin{(t)}$ 1 How to find a point after rotation? 0 Diagonalizable linear algebraic group is isomorphic to $(\mathbb{C}^*)^r\times A$, for some finite abelian group $A$ 0 Finding direction vector 0 Interpreting a chain of m's and o's from Macaulay2

### Tags (47)

 5 transcendental-equations 0 ring-theory × 14 5 trigonometry 0 lie-groups × 11 1 geometry × 3 0 invariant-theory × 11 1 analytic-geometry 0 commutative-algebra × 8 0 algebraic-geometry × 25 0 lie-algebras × 8

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 Mathematics 867 rep 1812 TeX - LaTeX 204 rep 39 Mathematica 204 rep 18 Stack Overflow 101 rep 2 Super User 101 rep 1