Question

Conditional ratio distribution on discrete random variables

score 27 · Answer 1 · 2026-04-10 13:46:40

27

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Conditional ratio distribution on discrete random variables

Published on 10 Apr 2026 - 13:46

score 124 · Answer 2 · 2026-04-16 03:36:24

124

Views

Find the breaking time of PDE $u_t+3u^2u_x =0$

Published on 16 Apr 2026 - 3:36

score 34 · Answer 3 · 2026-04-09 01:04:11

34

Views

Conditional density function between Gammas

Published on 09 Apr 2026 - 1:04

score 1.6k · Answer 4 · 2026-04-11 17:31:48

1.6k

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Product of 9 consecutive numbers cannot be partitioned into two sets with equal product. Where is my flaw in the proof?

Published on 11 Apr 2026 - 17:31

score 83 · Answer 5 · 2026-04-11 01:26:53

83

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Is there a simple trick to solve a minimization problem?

Published on 11 Apr 2026 - 1:26

score 161 · Answer 6 · 2026-04-16 02:45:19

161

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Two hundred people are assigned a number and enter a room. Matching numbers leave. What will be the highest total in the room?

Published on 16 Apr 2026 - 2:45

score 108 · Answer 7 · 2026-03-28 22:31:05

108

Views

Solving a PDE such as $\frac{\partial}{\partial x}f(a+1,x)=f(a,x)+x\frac{\partial}{\partial x}f(a,x)$

Published on 28 Mar 2026 - 22:31

score 113 · Answer 8 · 2026-04-13 18:29:00

113

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For each $a \in [0,1]$ there is a unique continuous $f: [0,1] \to [0, \infty)$ that solves the integral equation $f(x) = a \int_0^1e^{-xf(t)}dt$

Published on 13 Apr 2026 - 18:29

score 78 · Answer 9 · 2026-04-16 14:38:12

78

Views

Prove that there is $c >0$ such that $\int_0^1f^2dx \leq c \int_0^1 f'^2 dx$ for all $f \in C^1$ with $f(x+1) = f(x)$ and $\int_0^1f(x)dx = 0$.

Published on 16 Apr 2026 - 14:38

score 33 · Answer 10 · 2026-04-12 09:50:07

33

Views

Predict the probability of rooms being filled from a negative binomial process for arrival

Published on 12 Apr 2026 - 9:50

score 154 · Answer 11 · 2026-04-16 03:02:52

154

Views

Why doesn't my approach work for this probability question?

Published on 16 Apr 2026 - 3:02

score 48 · Answer 12 · 2026-04-09 13:11:15

48

Views

Approach to solving a unitary method problem

Published on 09 Apr 2026 - 13:11

score 96 · Answer 13 · 2026-04-23 07:10:07

96

Views

Proposition: The union of two finite sets is finite. (proving without induction)

Published on 23 Apr 2026 - 7:10

score 61 · Answer 14 · 2026-04-13 03:02:48

61

Views

Does a positive real function tending towards $0$ have a corresponding "convex line of best fit" with respect to area?

Published on 13 Apr 2026 - 3:02

score 73 · Answer 15 · 2026-04-11 00:07:43

73

Views

Does for every $n>1$ exist a sum of $n$ squares of consecutive natural numbers, that equals to the sum of squares of next $n-1$ consecutive numbers?

Published on 11 Apr 2026 - 0:07

List Question

Conditional ratio distribution on discrete random variables

Find the breaking time of PDE $u_t+3u^2u_x =0$

Conditional density function between Gammas

Product of 9 consecutive numbers cannot be partitioned into two sets with equal product. Where is my flaw in the proof?

Is there a simple trick to solve a minimization problem?

Two hundred people are assigned a number and enter a room. Matching numbers leave. What will be the highest total in the room?

Solving a PDE such as $\frac{\partial}{\partial x}f(a+1,x)=f(a,x)+x\frac{\partial}{\partial x}f(a,x)$

For each $a \in [0,1]$ there is a unique continuous $f: [0,1] \to [0, \infty)$ that solves the integral equation $f(x) = a \int_0^1e^{-xf(t)}dt$

Prove that there is $c >0$ such that $\int_0^1f^2dx \leq c \int_0^1 f'^2 dx$ for all $f \in C^1$ with $f(x+1) = f(x)$ and $\int_0^1f(x)dx = 0$.

Predict the probability of rooms being filled from a negative binomial process for arrival

Why doesn't my approach work for this probability question?

Approach to solving a unitary method problem

Proposition: The union of two finite sets is finite. (proving without induction)

Does a positive real function tending towards $0$ have a corresponding "convex line of best fit" with respect to area?

Does for every $n>1$ exist a sum of $n$ squares of consecutive natural numbers, that equals to the sum of squares of next $n-1$ consecutive numbers?

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