Operators on Expansions

`x + x`	[add](expansion.add.ipynb)	Sum (disjunction)
`x * weight`	[rweight](expansion.rweight.ipynb)	Right scalar product
`weight * x`	[lweight](expansion.lweight.ipynb)	Left scalar product
`x \\ x`	[ldivide](expansion.ldivide.ipynb)	Left quotient
`x & x`	[conjunction](expansion.conjunction.ipynb)	Conjunction (synchronized product)
`~x`	[complement](expansion.complement.ipynb)	Complement
`x | x`	[tuple](expansion.tuple.ipynb)	Tuple (Cartesian product)