booya

A family of distribution is pointing to the general set of possible distribution assuming a certain form

amoeba, a specific distribution is called a distribution when the parameters have a specified values

Anyone here is familiar with the Cox PH survival model? I'm trying make my own implementation in Tensorflow as an exercise

Anyone here is familiar with the CoxPH model and Tensorflow?

So what i did was set x1...xk as the basis of W1 intersect W2. Then I said i could extend this basis for w1 and w2, so B1= x1...xk,y1..ym and B2 = x1... xk, z1... zn. I take the union of the two and claim that it is a basis for B1+B2. the generating part is trivial, but i cant seem to prove linear independence. Ive tried contradiction, but that gives me that z1 is a linear combination of xs ys and zs, which doesnt look like much of a contradiction.

hello again chat, can anyone help me with the following proof? Show that dim(W1) + dim(W2) = dim(W1+W2) + dim(W1 n W2).

thank you :) was slightly unsure

is a zero dimensional vector space just {0}? cant seem to find the exact phrase in my textbook

oh wait, Zorn is just the axiom of choice, which is basically the maximal principle right?

aah, i wasnt paying attention last semester when we saw zorn -.- time to go learn haha, but thank you very much for the help! really appreciated

so how do i write that out? let F denote the family of all linearly independent subsets of V containing S and elements of B?

I do think you need to use the maximal principle im just not quite sure how

let B be a basis for a vector space V, and let S be alinearly independent subset of V. There exists a subset S1 of B such that S U S1 is a basis for V

:/ teacher left this exercise in our advanced lin algebra class and no one knows how to do it haha

yes, i understand the induction part on finite dimensions

Hi chat, anyone willing to guide me through a proof of the replacement theorem (linear algebra) for infinite dimensional vector spaces?

Hello chat, first time here. If I made a post about a question to be answered, is it okay for me to link it here to get attention?

hello linear algebra chat