Reputation
572
Top tag
Next privilege 1,000 Rep.
Create new tags
Badges
3 17
Newest
 Benefactor
Impact
~4k people reached

Nov
24
answered Why aren't all homomorphic abelian groups isomorphic as well?
Nov
23
comment I think I'm making an error in my implementation of least squares but I'm not sure (python).
Actually I need to correct my comment - you are correct, that formula is for both multivariable linear regression and single-var polynomial regression. The latter bit about weirdness and code not being defined well enough still stands.
Nov
23
comment I think I'm making an error in my implementation of least squares but I'm not sure (python).
the picture you posted shows polynomial regression, while the formula you posted looks like linear regression. Perhaps you are expecting something different? it's certainly not an analog<->digital thing, the computer can cope just fine. But you haven't explained enough about your code or your weirdness for me to figure out what is up.
Nov
23
revised ideal calculation and relations
fixed problem statement, adding PID case.
Nov
22
asked ideal calculation and relations
Nov
18
asked kernel of the artin map when dealing with S-ideles and S-divisors for function fields
Oct
15
awarded  Nice Question
Aug
18
comment Difference between $f(.)$ over $\mathbb{Z}_q$ and $f(x)$ for $x \in\mathbb{Z}_q$
some context, id est, the book you see this in, would be appropriate. Notation means whatever the author intends it to mean.
Aug
14
comment What, and how can, topological invariants can be computed from a space's algebra of functions?
do you have a reference for the proof of this fact? Or shall I start hunting through Connes' tome?
Aug
14
revised What, and how can, topological invariants can be computed from a space's algebra of functions?
Clarified question, added ncg tag since folks suggest it is relevant
Aug
14
asked What, and how can, topological invariants can be computed from a space's algebra of functions?
Aug
3
accepted profinite completion of a ring of integers in a global field
Aug
3
comment profinite completion of a ring of integers in a global field
A "yes" to a yes/no question is sufficient. But the topological point is not clear to me.
Aug
3
awarded  Informed
Aug
3
asked profinite completion of a ring of integers in a global field
Apr
26
awarded  Popular Question
Sep
30
awarded  Explainer
Sep
24
awarded  Autobiographer
Jul
2
awarded  Curious
Mar
18
awarded  Yearling