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2012-03-23 05:55:26 +0200 asked a question Lost access on Sagenb.org

Hi

I've recently started to use the sagenb server instead of my own version of sage to circumvent some features that are not currently working on Mac OS. I wanted to play smart by using my gmail account to register on sagenb.org and not have to invent yet an other password for it. That means that I should have a sagenb username (it should be Bertrand_Meyer if I'm not mistaken) but no known password associated with it. Now unfortunately, the link from Google.com to sagenb.org is not working anymore and, by trying different things, a new empty sagenb account (without the underscore) has been associated with my google account.

Here is my question : is there any way to reset by myself the password of a sagenb account or just to recover my lost code ? I've seen in older post that this was a project ?

Thanks

Bertrand

2012-03-01 11:59:23 +0200 received badge  Student (source)
2012-03-01 11:29:43 +0200 asked a question Norm in a quadratic space

Hi

I'm working in a vector space where the inner product is not the usual one and I would need to access directly to the norm induced by inner product. I found how to create such a space but the 'norm' function gives me the usual norm, which is not the one I want.

Here is an example :

SP=matrix(QQ,[[2,0],[0,3]])
V=VectorSpace(QQ,2,inner_product_matrix=SP)

What I want to compute is e.g.

e0=V.0
e0.inner_product(e0)

while e0.norm() gives me 1 (wrong answer for me)

I assume this should be possible directly. Any idea how ?

Thanks,