| |
| |
| |
|
Page: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
<delta> teferi, they are nbh of a, and b respectively.
<teferi> ahhh, I see
<teferi> thank you!
<foster> g'afternoon everyone
<xolution> Quick question, I'm sure it's something small I'm not seeing. I have two groups G and G' (with identities n and n', respectively), and a function f:G->G' that's a homomorphism. I want to show that ker(f) = {n} => f is injective.
<delta> xolution, what does mean f is injective?
<xolution> one-to-one
<delta> xolution, that is?
<xolution> For all a,b f(a) = f(b) => a = b
<ski> if it maps two things to the same result, then the two things must be the same
<delta> xolution, do you mean f(a)(f(b))^{-1}=n' => a = b ?
<xolution> ah, i see it now
<xolution> thanks, delta
<Defty> Does The Matrix have an inverse matrix?
<Defty> j/k
<Defty> "n/k" ,p
<ski> maybe it's a singular matrix ?
<Defty> ok so we're all projections of the matrix, but is it possible to find the original thing that's actually projected
<IseeIsee> i have a 15X16 augmented matrix
<IseeIsee> I want to know its solution
<IseeIsee> the solution of this matrix
<IseeIsee> is there any website or software where I can put it and check
<Defty> ask mbot in private, {{1,2},{3,4}} would be a 2x2 matrix and . means matrix product in between the matrix and a vector for instance
<IseeIsee> whats mbot ?
<paolo> is there somewhere the syntax that mbot can understand?
<lillpelle> yes, www.wolfram.com
Return to math
or
Go to some related
logs:
html
|
|