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# Copyright (C) 2023-2024 Matthew Scroggs and Garth N. Wells
#
# This file is part of Basix (https://www.fenicsproject.org)
#
# SPDX-License-Identifier: MIT
"""Functions for handling Sobolev spaces."""
from basix._basixcpp import SobolevSpace
from basix._basixcpp import sobolev_space_intersection as _ssi
__all__ = ["intersection"]
def intersection(spaces: list[SobolevSpace]) -> SobolevSpace:
"""Compute the intersection of a list of Sobolev spaces.
Args:
spaces: List of Sobolev spaces.
Returns:
Intersection of the Sobolev spaces.
"""
space = spaces[0]
for s in spaces[1:]:
space = _ssi(space, s)
return SobolevSpace[space.name]
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