Hi Nathann,
You are right. Infinite words don't belong into an algebra; you cannot
multiply them. Barring hack reasons, the change is correct.
Best regards,
Darij
On Sun, Jan 5, 2014 at 3:32 PM, Nathann Cohen nathann.co...@gmail.com wrote:
Or possibly : you know that your algebras can
You are right. Infinite words don't belong into an algebra; you cannot
multiply them. Barring hack reasons, the change is correct.
HMmm... And what do you think of Shuffle Algebras on infinite words ? Is
this one correct or not ?
It looks okay to me.. But if you tell me that it is not
Okay, I just created an element manually instead of calling an_element().
Nathann
On 5 January 2014 15:59, Nathann Cohen nathann.co...@gmail.com wrote:
You are right. Infinite words don't belong into an algebra; you cannot
multiply them. Barring hack reasons, the change is correct.
Oops, I've just realized that you *can* multiply infinite words,
though I'm not sure if this has ever been used. (No, you cannot take
their shuffle product.)
On Sun, Jan 5, 2014 at 4:29 PM, Nathann Cohen nathann.co...@gmail.com wrote:
Okay, I just created an element manually instead of calling
How do you define multiplication ?! If it is concatenation then uv = u...
2014/1/5, Darij Grinberg darijgrinb...@gmail.com:
Oops, I've just realized that you *can* multiply infinite words,
though I'm not sure if this has ever been used. (No, you cannot take
their shuffle product.)
On Sun,
On Sun, Jan 5, 2014 at 5:54 PM, Vincent Delecroix
20100.delecr...@gmail.com wrote:
How do you define multiplication ?! If it is concatenation then uv = u...
Yes, but it's associative, so it works... (Except I don't expect it to
have much of a use.)
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Yes, but it's associative, so it works... (Except I don't expect it to
have much of a use.)
can you be more specific? How is the product uv defined? I see that you
have a shuffle product defined, but I don't see that you have
concatenation...
Thanks, Christian
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H... I just had Nicolas on the phone who told me that both can be
changed to finite words only. Aand he had Florent around to
confirm.
I also think that the concatenation product is not well defined. And I
actually wrote that in the patch already :-/
On the other hand I did not
Concatenation product is well defined but not well implemented in
Sage. If u is infinite then uv = u for any (finite or infinite) word
v. It is not a free monoid anymore.
That being said, you can build the algebra on finite words, the one on
infinite words (which is really stupid) and the one on
The shuffle algebra is not well defined on infinite words (the product
becomes an infinite sum). So please turn infinite=False in both
situations.
Okay... So I will edit #12867 again :-P
Nathann
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I just edited ticket #12867. Thank you for your help :-)
Nathann
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Thank you for your work !!
2014/1/5, Nathann Cohen nathann.co...@gmail.com:
I just edited ticket #12867. Thank you for your help :-)
Nathann
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