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13 Questions

Votes Activity Newest Views

votes

answer

255

views

What is the relationship between a quotient space and annihalator?

Jan 14 '16 at 0:20 Michael Albanese 78.9k

votes

answers

710

views

Proving the transpose / dual map is well defined.

linear-algebra vector-spaces duality-theorems

Dec 30 '15 at 16:26 egreg 213k

votes

answers

434

views

Finding isomorphisms between finite fields.

abstract-algebra galois-theory finite-fields group-isomorphism

Feb 23 '16 at 17:28 Lubin 55k

votes

answer

984

views

Showing two groups are not isomorphic using the order of their elements.

group-theory cyclic-groups group-isomorphism direct-product

Mar 4 '15 at 22:25 kw3rti 329

votes

answer

views

Unit Measure Axiom for the Gamma Distribution

probability probability-distributions gamma-function gamma-distribution exponential-distribution

Dec 28 '15 at 17:10 Michael Hardy 246k

votes

answers

171

views

How do you calculate the directional derivative in multiple dimensions?

calculus multivariable-calculus derivatives partial-derivative

Feb 7 '15 at 19:27 Christian Blatter 206k

vote

answers

110

views

Compute $P(X<x\mid Y)$ and $P(X<x\mid Z)$ for $(X,Y)$ i.i.d. uniform on $(0,1)$ and $Z=Y/X$

probability-theory probability-distributions conditional-expectation

Jan 19 '17 at 23:59 Community♦ 1

vote

answer

109

views

Fundamental Theorem of Calculus With Function Containing Limit Variable

calculus integration multivariable-calculus derivatives

May 15 '15 at 20:35 kw3rti 329

vote

answers

views

Deriving the Particular Solution to a Linear Discrete Dynamical System

calculus linear-algebra discrete-mathematics recurrence-relations dynamical-systems

May 9 '15 at 13:58 kw3rti 329

vote

answer

425

views

The Idea behind the Second Partial Derivative Test

multivariable-calculus eigenvalues-eigenvectors partial-derivative

Mar 17 '15 at 13:01 martini 76.2k

votes

answers

views

Solving a system of linear ODEs to show that the steps of a Poisson process are Poisson distributed

probability ordinary-differential-equations poisson-distribution poisson-process

May 8 '16 at 11:19 kw3rti 329

votes

answers

149

views

When should the Geometric Distribution be used?

probability probability-distributions random-variables

Jan 7 '16 at 17:10 kw3rti 329

votes

answers

101

views

Proving that $\operatorname{Im} f \cong V/\ker f$ for a linear map f.

linear-algebra quotient-spaces vector-space-isomorphism

Dec 29 '15 at 19:38 Aloizio Macedo♦ 30.2k

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13 Questions

What is the relationship between a quotient space and annihalator?

Proving the transpose / dual map is well defined.

Finding isomorphisms between finite fields.

Showing two groups are not isomorphic using the order of their elements.

Unit Measure Axiom for the Gamma Distribution

How do you calculate the directional derivative in multiple dimensions?

Compute $P(X<x\mid Y)$ and $P(X<x\mid Z)$ for $(X,Y)$ i.i.d. uniform on $(0,1)$ and $Z=Y/X$

Fundamental Theorem of Calculus With Function Containing Limit Variable

Deriving the Particular Solution to a Linear Discrete Dynamical System

The Idea behind the Second Partial Derivative Test

Solving a system of linear ODEs to show that the steps of a Poisson process are Poisson distributed

When should the Geometric Distribution be used?

Proving that $\operatorname{Im} f \cong V/\ker f$ for a linear map f.