Intersection theory: hyperplane classes #15752

Job	Run time
doctest (1.10, ubuntu-latest)	23m 59s
doctest (1.11-nightly, ubuntu-latest)	22m 18s
test (1.6, short, ubuntu-latest)	1h 18m 28s
doctest (nightly, ubuntu-latest)	27m 2s
test (1.6, long, ubuntu-latest)	54m 14s
test (1.10, short, ubuntu-latest)	54m 1s
doctest (1.10, ubuntu-latest, depwarn=error)	24m 13s
test (1.10, long, ubuntu-latest)	45m 11s
doctest (1.10, macOS, RPTU)	11m 59s
test (1.11-nightly, short, ubuntu-latest)	1h 3m 2s
test (1.11-nightly, long, ubuntu-latest)	51m 35s
test (nightly, short, ubuntu-latest)	1h 5m 32s
test (nightly, long, ubuntu-latest)	52m 14s
test (1.10, short, ubuntu-latest, depwarn=error)	51m 35s
test (1.10, long, ubuntu-latest, depwarn=error)	45m 23s
test (1.10, short, macOS, RPTU)	11m 32s
test (1.10, long, macOS, RPTU)	12m 26s
test (1.10, book, ubuntu-latest)	49m 28s
	12h 24m 12s

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