Number ExtElement -- multiplication of a number and an Ext-algebra element

Synopsis

• Operator: SPACE

• Usage:

  u = a x

• Inputs:
  • a, a number,
  • x, an instance of the type ExtElement, $x$ is of type $E$, where $E$ is of type ExtAlgebra
• Outputs:
  • u, an instance of the type ExtElement, $u$ is of type $E$, the product $a*x$

Description

i1 : L = lieAlgebra{a,b,c}/{a b,b c}

o1 = L

o1 : LieAlgebra

i2 : E = extAlgebra(3,L)

o2 = E

o2 : ExtAlgebra

i3 : (-3) (2 ext_3-ext_4)

o3 =  - 6ext_3 + 3ext_4

o3 : E

See also

• RingElement ExtElement -- multiplication of a field element and a Ext-algebra element
• ExtAlgebra -- the class of all Ext-algebras