can incidence algebras over ring that is not number ring?

asked 2020-07-13 14:20:06 +0100

Xie
31 ●2 ●5

updated 2022-06-30 21:08:40 +0100

FrédéricC

5311 ●4 ●44 ●118

I try the following codes, but it does not work.

SF= SymmetricFunctions(QQ) 
s = SF.s() 
I = P.incidence_algebra(SF)
s([2,1])*I[1,1]  
TypeError: unsupported operand parent(s) for *: 'Symmetric Functions over Rational Field in the Schur basis' and 'Incidence algebra of Finite lattice containing 4 elements over Symmetric Functions over Rational Field'

edit retag flag offensive close merge delete

add a comment

1 Answer

Sort by » oldest newest most voted

answered 2020-07-14 08:45:04 +0100

FrédéricC

5311 ●4 ●44 ●118

Like this

P = posets.PentagonPoset()
SF = SymmetricFunctions(QQ) 
s = SF.s() 
I = P.incidence_algebra(s)
s([2,1])*I[1,1]

This is because SF.s() is another parent.

edit flag offensive delete link

Comments

Thanks! I only use s for computation and do not know s can be used as a ring.

Xie ( 2020-07-14 10:34:27 +0100 )edit

add a comment

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Question Tools

1 follower

Stats

Asked: 2020-07-13 14:20:06 +0100

Seen: 254 times

Last updated: Jul 14 '20

can incidence algebras over ring that is not number ring? edit