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EJoshuaS - Stand with Ukraine
  • Member for 6 years
  • Last seen more than a month ago
  • Chicago, IL, United States
44 votes
7 answers
9k views

Is being a right triangle both necessary and sufficient for the Pythagorean Theorem to hold?

10 votes
2 answers
452 views

Why do many textbooks on Bayes' Theorem include the frequency of the disease in examples on the reliability of medical tests?

4 votes
4 answers
8k views

Proof that every third Fibonacci number is even

2 votes
1 answer
677 views

Why does the Ratio Test prove that this particular sequence converges on 0?

2 votes
0 answers
149 views

Proof that my greedy algorithm for assigning candidates to jobs works

2 votes
1 answer
1k views

Calculate the total number of floating-point numbers in a certain range

2 votes
2 answers
891 views

Beginner: How to complete the induction case in a proof that all multiples are a product of the least common multiple

2 votes
1 answer
372 views

Beginner question: Notation for polynomial rings

2 votes
1 answer
112 views

Markov Inequality results seems too high

1 vote
1 answer
179 views

Chebyshev Inequality bounds for the probability of 90 out of 100 coin tosses being tails

1 vote
1 answer
49 views

Is a balanced undirected signed graph bipartite in exactly the case where all signs are negative?

1 vote
1 answer
37 views

What does $\sum_{i/k_i = k}$ mean in the equation below?

1 vote
1 answer
41 views

When does the correlation length increase and diverge in an Ising model?

1 vote
2 answers
160 views

Beginner question: algebraic properties of string rotations

1 vote
1 answer
860 views

Stability of fixed points in this example from a dynamical systems textbook

1 vote
1 answer
67 views

Number of permutations of items in a table where you may only select one item per column and row

1 vote
1 answer
1k views

Correct notation for multiple intervals for a function's range

0 votes
1 answer
87 views

What properties does fuzzy logic preserve?

0 votes
2 answers
120 views

Is using the fact that multiplication and addition are closed in an ordered field to prove that there are no "gaps" in the real number line circular?

0 votes
0 answers
35 views

Which came first - the Matrix entry name convention or the Programming for loop variable name convention?

0 votes
1 answer
83 views

How to understand this example of finding a particular solution with the Method of Undetermined Coefficients

0 votes
1 answer
171 views

Explanation of example problem of multivariable optimization in a book

0 votes
2 answers
3k views

Solving systems of linear equations involving modulo

0 votes
1 answer
28 views

What is $\mu (i, j)$ in the context of an Ising model on a small-world network?

0 votes
1 answer
103 views

What does $d \tau s(\tau)$ refer to in this equation and how do I integrate it?

0 votes
1 answer
16 views

Why does $I + S \xrightarrow{\lambda} 2S$ correspond to $\frac{di}{dt} = -\lambda \langle k \rangle i(t) s(t)$ in this model?

0 votes
0 answers
17 views

How do you select $U_0$ in this formulation of the T-Distribution?

0 votes
0 answers
57 views

Using Chernoff Bound to estimate the probability of 90 out of 100 coin flips being "tails"

0 votes
1 answer
19 views

Chebyshev Inequality bounds where the difference from the mean is less than the variance

0 votes
0 answers
32 views

Why can unused binary codes be used to make two messages of length 2?