Vectors with rational entries

AUTHOR:

• William Stein (2007)

• Soroosh Yazdani (2007)

EXAMPLES:

sage: v = vector(QQ,[1,2,3,4,5])
sage: v
(1, 2, 3, 4, 5)
sage: 3*v
(3, 6, 9, 12, 15)
sage: v/2
(1/2, 1, 3/2, 2, 5/2)
sage: -v
(-1, -2, -3, -4, -5)
sage: v - v
(0, 0, 0, 0, 0)
sage: v + v
(2, 4, 6, 8, 10)
sage: v * v
55

We make a large zero vector:

sage: k = QQ^100000; k
Vector space of dimension 100000 over Rational Field
sage: v = k(0)
sage: v[:10]
(0, 0, 0, 0, 0, 0, 0, 0, 0, 0)

class sage.modules.vector_rational_dense.Vector_rational_dense

Bases: FreeModuleElement

list(copy=True)

The list of entries of the vector.

INPUT:

• copy, ignored optional argument.

EXAMPLES:

sage: v = vector(QQ,[1,2,3,4])
sage: a = v.list(copy=False); a
[1, 2, 3, 4]
sage: a[0] = 0
sage: v
(1, 2, 3, 4)

sage.modules.vector_rational_dense.unpickle_v0(parent, entries, degree)

sage.modules.vector_rational_dense.unpickle_v1(parent, entries, degree, is_mutable)