Question

Polar coordinates for $xz$-plane: $z = r\sin\theta$ ? [Stewart P1091 16.7.25]

score 3.1k · Answer 1 · 2014-04-04 08:32:13

3.1k

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Polar coordinates for $xz$-plane: $z = r\sin\theta$ ? [Stewart P1091 16.7.25]

Published on 04 Apr 2014 - 8:32

score 29.5k · Answer 2 · 2014-04-07 03:59:17

29.5k

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Visually deceptive "proofs" which are mathematically wrong

Published on 07 Apr 2014 - 3:59

score 175 · Answer 3 · 2014-04-12 06:56:07

175

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Proof strategy for $(=>)$: If $g \circ f = id_A$, then f onto $\iff$ g 1-1. [Chartrand 3Ed P239 9.72]

Published on 12 Apr 2014 - 6:56

score 238 · Answer 4 · 2014-04-14 06:22:40

238

Views

Intuition - Countable iff Surjection iff Injection [Velleman P310 Thm 7.1.5]

Published on 14 Apr 2014 - 6:22

score 234 · Answer 5 · 2014-04-20 12:22:16

234

Views

Proof strategy for $(\Leftarrow)$: If $g \circ f = id_A$, then $f$ onto $\Leftrightarrow$ $g$ 1-1. [Chartrand 3Ed P239 9.72]

Published on 20 Apr 2014 - 12:22

score 1.2k · Answer 6 · 2014-04-21 10:46:46

1.2k

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Cauchy-Schwarz Inequality - How can you divine the linchpin of $\Vert proj_{W}\mathbf{v}\Vert$?

Published on 21 Apr 2014 - 10:46

score 809 · Answer 7 · 2014-04-24 17:10:38

809

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Picture - Equivalence Relation & Classes, Partitions, Quotient Set, & other related ideas

Published on 24 Apr 2014 - 17:10

score 1.4k · Answer 8 · 2014-04-29 13:34:33

1.4k

Views

How to visualize Reverse Triangle Inequality $||\mathbf{a}| − |\mathbf{b}|| ≤ |\mathbf{a} − \mathbf{b}|$?

Published on 29 Apr 2014 - 13:34

score 4.6k · Answer 9 · 2014-04-29 15:02:24

4.6k

Views

Factorial of 1,e+80

Published on 29 Apr 2014 - 15:02

score 244 · Answer 10 · 2014-05-03 14:15:26

244

Views

Intuition. Equivalence of Characterization of Limits and Continuity (Abbott p106 t4.2.3, p110 t4.3.2)

Published on 03 May 2014 - 14:15

score 148 · Answer 11 · 2014-05-04 03:38:28

148

Views

Geometric intuition behind subspaces in $\mathbb C^n$

Published on 04 May 2014 - 3:38

score 3.8k · Answer 12 · 2014-05-04 20:43:02

3.8k

Views

Determine Cross Product with Left Hand vs Right Hand

Published on 04 May 2014 - 20:43

score 1.2k · Answer 13 · 2014-05-06 12:28:43

1.2k

Views

What does the vector space $\mathbb{R}^{\mathbb{R}}$ look like?

Published on 06 May 2014 - 12:28

score 113 · Answer 14 · 2014-05-07 14:07:12

113

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Which Cross Product for the Desired Orientation of a Hyperboloid ? [Stewart P1103 16.9.8]

Published on 07 May 2014 - 14:07

score 1.7k · Answer 15 · 2014-05-12 16:00:02

1.7k

Views

Penrose tilings as a cross section of a $5$-dimensional regular tiling

Published on 12 May 2014 - 16:00

List Question

Polar coordinates for $xz$-plane: $z = r\sin\theta$ ? [Stewart P1091 16.7.25]

Visually deceptive "proofs" which are mathematically wrong

Proof strategy for $(=>)$: If $g \circ f = id_A$, then f onto $\iff$ g 1-1. [Chartrand 3Ed P239 9.72]

Intuition - Countable iff Surjection iff Injection [Velleman P310 Thm 7.1.5]

Proof strategy for $(\Leftarrow)$: If $g \circ f = id_A$, then $f$ onto $\Leftrightarrow$ $g$ 1-1. [Chartrand 3Ed P239 9.72]

Cauchy-Schwarz Inequality - How can you divine the linchpin of $\Vert proj_{W}\mathbf{v}\Vert$?

Picture - Equivalence Relation & Classes, Partitions, Quotient Set, & other related ideas

How to visualize Reverse Triangle Inequality $||\mathbf{a}| − |\mathbf{b}|| ≤ |\mathbf{a} − \mathbf{b}|$?

Factorial of 1,e+80

Intuition. Equivalence of Characterization of Limits and Continuity (Abbott p106 t4.2.3, p110 t4.3.2)

Geometric intuition behind subspaces in $\mathbb C^n$

Determine Cross Product with Left Hand vs Right Hand

What does the vector space $\mathbb{R}^{\mathbb{R}}$ look like?

Which Cross Product for the Desired Orientation of a Hyperboloid ? [Stewart P1103 16.9.8]

Penrose tilings as a cross section of a $5$-dimensional regular tiling

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