definition
is unambiguous.
在2025年1月27日星期一 UTC+8 02:24:58 写道：
> On Sat, Jan 25, 2025 at 11:03 PM Xie wrote:
> >
> > for M in matroids.AllMatroids(8, type='sparse_paving'):
> > : print(M)
> > sparse_paving_n08_r04_#0: Matroid of rank 4 on 8 elements with 56 bases
for M in matroids.AllMatroids(8, type='sparse_paving'):
: print(M)
sparse_paving_n08_r04_#0: Matroid of rank 4 on 8 elements with 56 bases
sparse_paving_n08_r05_#0: Matroid of rank 5 on 8 elements with 48 bases
sparse_paving_n08_r06_#0: Matroid of rank 6 on 8 elements with 24 bases
spar
R.=QQ['t']
Sym=SymmetricFunctions(R);
Sym.inject_shorthands();
s([[2],[1]])/2 will cause wrong:
ValueError: 1 is not divisible by 2
But s([[2],[1]])*1/2 is good.
s([[2],[1]])==s[1]. s[1]/2 is good.
So, why?
If we work on SymmetricFunctions(FractionField(R)), s([[2],[1]])/2 will
work.
Yes. If one people edit the notebook then the other's browser will auto
refresh. Not a very good experience, just works.
在2020年11月18日星期三 UTC+8 下午5:04:02 写道：
> On Wed, Nov 18, 2020 at 2:42 AM Xie wrote:
>
>> Thanks, but jupyterhub does not supoort real-time collaborati
Thanks, but jupyterhub does not supoort real-time collaboration now
though roadmap contains this.
在2020年11月18日星期三 UTC+8 上午2:07:29 写道：
> On Tue, Nov 17, 2020 at 2:50 PM Xie wrote:
>
>> Yes. I use *Jupyter* *Notebook* myself. But I need share with other
>>
Yes. I use *Jupyter* *Notebook* myself. But I need share with other
people sometimes. And *Jupyter* Notebook* does not* provide a server
mode to make the others register an account. Most students use Windows,
which is not very friendly to SageMath. I also tried Cocalc in Docker.
It
