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Commit 2021-10-29 01:24 4ce2a5f1

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chore(algebra/module/submodule_lattice): lemmas about the trivial submodule (#10022) Lemmas about the trivial submodule. Also move an existing lemma exists_mem_ne_zero_of_ne_bot about the trivial submodule from linear_algebra/dimension to algebra/module/submodule_lattice, since it doesn't use any facts about dimension.

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