●In Differential geometry:
A
that is
enough to a Euclidean
(ℝⁿ) to
one to do calculus;
(more
) a
that can be
with a
structure (an
of ℝⁿ-compatible charts).
A
that is
enough to a Euclidean
(ℝⁿ) to
one to do calculus;
a
that can be
with a
structure (an
of ℝⁿ-compatible charts).