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notadoctor
  • Member for 6 years
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3 votes
1 answer
48 views

Solve this ODE: $y' = \frac{(y-4x)}{(x-y)}$

2 votes
1 answer
63 views

Why isn't the set V, as defined in the question body, a vector space?

2 votes
0 answers
134 views

Smith Normal Form of a companion matrix of monic polynomial

2 votes
3 answers
201 views

Series convergence properties of sequences whose ratio converges

2 votes
2 answers
376 views

Finding a cubic polynomial with Cayley-Hamilton Theorem

2 votes
2 answers
41 views

Prove that the nullspaces of linear operators acting on themselves are eventually equal

1 vote
1 answer
163 views

Showing that a greatest common divisor must be 1 or 2 using pigeonhole principle

1 vote
1 answer
244 views

Characteristic polynomial of a linear operator in matrix space

1 vote
2 answers
222 views

Convergence of a sequence of partial sums of partial sums [duplicate]

1 vote
1 answer
323 views

Does transformation invariance of the range and null space imply commutativity?

1 vote
2 answers
358 views

Show that distinct subsets of a specific-cardinality subset have equal sums

1 vote
1 answer
38 views

Prove that each vector in span(S) is a unique linear combination, where S is a particular subset of a vector space V

0 votes
1 answer
37 views

6 possible options on each of 3 days. How many arrangements are possible? (Is this as terribly ambiguous a problem as I think?)

0 votes
1 answer
231 views

Proving that continuity and the lim sup of a given set being 0 are equivalent

0 votes
1 answer
176 views

Arithmetic Mean of Partial Sums of Geometric Series

0 votes
1 answer
194 views

Smallest Gerschgorin Disk containing all eigenvalues of a transition matrix

0 votes
1 answer
1k views

Show that distinct subsets of a set have equal sums using pigeonhole principle