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| bio | website | willorrick.wordpress.com |
|---|---|---|
| location | ||
| age | ||
| visits | member for | 2 years, 6 months |
| seen | 8 hours ago | |
| stats | profile views | 201 |
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May 10 |
comment |
Obtaining a perfect ternary code from conference matrix Can you say how "Paley matrix" is defined here? |
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May 10 |
revised |
Obtaining a perfect ternary code from conference matrix added 80 characters in body |
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May 9 |
comment |
Could someone please explain the theory behind finding if a given point is inside a circle on a grid? As written, your formula actually states that if radius squared is greater than ((xCoord - xCenter) ^ 2 + (yCoord - yCenter) ^ 2), then the point is inside the circle. It should make more sense that way. ("$a<b$" means $a$ less than $b,$ which is the same as $b$ greater than $a$.) |
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May 9 |
comment |
Finding probability that a person gets $7$ when rolling a pair of dice @CommonerG : I think he means that if the number that was first rolled appears again before a 7 is rolled, he wins. |
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May 8 |
comment |
Differentiability of function $f(x,y) = |x|^a + |x-y|$. I think you also need to be careful when $a\le1$. For example, when $a=1,$ you get the term $\lvert x\rvert,$ which is not differentiable at $x=0.$ When $a<1,$ the tangent line of $\lvert x\rvert^a$ approaches the vertical as $x$ approaches $0$ from above or below. |
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May 8 |
answered | Question about quotient groups and cosets |
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May 8 |
comment |
What is 3-symmetric drawing of graph The red vertex connected to three blue vertices should be the center vertex in the diagram with three-fold symmetry. After contracting the blues to greens, don't you end up with $K_{4,3}$? I think you will then have to delete a red rather than contracting it with another red. |
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May 8 |
comment |
What is 3-symmetric drawing of graph @Yola : I made the graph in Mathematica. I had to compute the vertex coordinates explicitly. |
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May 8 |
answered | What is 3-symmetric drawing of graph |
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May 7 |
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What is 3-symmetric drawing of graph They mean a drawing with 3-fold symmetry. The most usual drawing has 5-fold symmetry, but you should be able to track down other drawings. |
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May 5 |
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What explains this bizarre behavior? @TMM : $x_2=-1$ for $x_0=(1+\sqrt{33})/8\approx0.84307,$ while $x_3=1$ for $x_0=\left(\sqrt{2(273-\sqrt{33})}+\sqrt{33}-1\right)/32\approx0.870752.$ The limiting value of $x_n$ changes from $+\infty$ to $-\infty$ infinitely often between these two values. The least critical value greater than $0.87$ is $x_0\approx0.870214,$ at which point $x_6=-1,$ so one can also say that the limiting value of $x_n$ changes from $+\infty$ to $-\infty$ infinitely often between $\approx0.870214$ and $\approx0.870752.$ |
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May 5 |
revised |
What explains this bizarre behavior? image replaced - points at +1, -1 were incorrect |
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May 5 |
revised |
What explains this bizarre behavior? added 612 characters in body |
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May 5 |
revised |
What explains this bizarre behavior? added 1745 characters in body |
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May 5 |
answered | What explains this bizarre behavior? |
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May 4 |
revised |
Question about polynomial rings. some needed conditions |
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May 3 |
revised |
Behaviour of an extended binary Hamming code when 3 errors have occurred added paragraph on decoding |
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May 3 |
answered | Behaviour of an extended binary Hamming code when 3 errors have occurred |
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May 3 |
comment |
A continued fraction involving Bernoulli numbers Can someone explain why this question is being downvoted? |
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May 1 |
answered | Question about polynomial rings. |
