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seen Jan 30 at 13:35

May
5
accepted Why is fibonacci coding useful?
May
4
comment Why is fibonacci coding useful?
Thanks, I have those paper and I'm going to read it ASAP.
May
4
revised Why is fibonacci coding useful?
Added an assumption.
May
4
asked Why is fibonacci coding useful?
Feb
28
comment Example of a subalgebra of infinite-generated algebra which cannot be extended to a maximal subalgebra
Not sure if my edit is just dismissed or I did something wrong. However, here is the screenshot of the proof.
Feb
27
awarded  Commentator
Feb
27
comment Example of a subalgebra of infinite-generated algebra which cannot be extended to a maximal subalgebra
Once my edit is reviewed, I will accept your answer :)
Feb
27
suggested suggested edit on Example of a subalgebra of infinite-generated algebra which cannot be extended to a maximal subalgebra
Feb
27
comment Example of a subalgebra of infinite-generated algebra which cannot be extended to a maximal subalgebra
I'm willing to edit your answer in purpose to add a full proof. Please, respond if it is okay. Or, if you would like, you can do it by yourself.
Feb
27
comment Example of a subalgebra of infinite-generated algebra which cannot be extended to a maximal subalgebra
This one seems to be really cool and easy to understand! Thanks!
Feb
26
awarded  Teacher
Feb
26
answered Example of a subalgebra of infinite-generated algebra which cannot be extended to a maximal subalgebra
Feb
26
comment Example of a subalgebra of infinite-generated algebra which cannot be extended to a maximal subalgebra
@QiaochuYuan: I believe, you mean an additive group of rational numbers which does not have maximal subgroups at all.
Feb
26
comment Example of a subalgebra of infinite-generated algebra which cannot be extended to a maximal subalgebra
Hm, identity operation cannot give you any new elements. This means, that if you have a system B, then the closure of this system by identity operation would give you B again. This in turn means that adding new elements to B means nothing but adding new elements, so if you just take any subset B of algebra base A, you can add all but one of the A\B elements to B and you will get a maximal subalgebra. I believe, that very alike thought have place with constant operation. Where am I wrong?
Feb
26
awarded  Editor
Feb
26
revised Example of a subalgebra of infinite-generated algebra which cannot be extended to a maximal subalgebra
Changed "system of creators" to "system of generators" according to the advice given in comment.
Feb
26
comment Example of a subalgebra of infinite-generated algebra which cannot be extended to a maximal subalgebra
@QiaochuYuan: Thank you, I will think of it.
Feb
26
comment Example of a subalgebra of infinite-generated algebra which cannot be extended to a maximal subalgebra
@g.castro: thanks
Feb
26
comment Example of a subalgebra of infinite-generated algebra which cannot be extended to a maximal subalgebra
I thought about infinite-based vector spaces and replacements of all vectors with i-th coordinate equal to some number (maybe, to all numbers <=i) for each i, but I didn't manage to come up with something.
Feb
26
asked Example of a subalgebra of infinite-generated algebra which cannot be extended to a maximal subalgebra