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Apr
3
accepted Commutativity of multiplication of cosets of the commutator subgroup
Apr
3
asked Commutativity of multiplication of cosets of the commutator subgroup
Apr
2
comment show the form of a subgroup when the index and order are relatively prime
Such a subgroup is called a "Hall subgroup", by the way.
Nov
13
comment Find root of $x^2 + bx + c$ with an approximation for $b$
Yeah, $x$ is also an integer. Forgot to mention that, sorry.
Nov
13
revised Find root of $x^2 + bx + c$ with an approximation for $b$
added 24 characters in body
Nov
13
revised Find root of $x^2 + bx + c$ with an approximation for $b$
added 112 characters in body
Nov
13
comment Find root of $x^2 + bx + c$ with an approximation for $b$
I don't understand quite what you're asking.
Nov
13
asked Find root of $x^2 + bx + c$ with an approximation for $b$
Nov
2
accepted Number of dice rolls taken to reach a certain sum
Oct
24
comment Show linear independence of cosines
I think eigenvalues as a tool are out of scope, since we haven't covered them in the course. Thank you though. I like your book a lot.
Oct
24
accepted Show linear independence of cosines
Oct
24
comment Show linear independence of cosines
I agree, this is very elegant. Much more elegant than the solution I ended up putting on the exam, heh.
Oct
24
comment Show that $\{cos(cx) | c \in \Bbb{R}, c > 0\}$ is a linearly independent subset of $W$.
I definitely know where this question came from, heh. How'd you do on the test?
Oct
23
asked Show linear independence of cosines
Sep
13
awarded  Scholar
Sep
13
accepted Need to compute/approximate a summation of the quotients of binomial coefficients
Sep
12
comment Need to compute/approximate a summation of the quotients of binomial coefficients
Awesome. Thank you very much. I don't quite understand the second step, where you pull the (t-k) out - can you explain that?
Sep
11
comment Need to compute/approximate a summation of the quotients of binomial coefficients
The RV is the number of iterations of a loop in a randomized algorithm involving pseudorandom permutations with particular properties.
Sep
11
revised Need to compute/approximate a summation of the quotients of binomial coefficients
edited body
Sep
11
awarded  Editor