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theorem instCoeObjectAggregateMaterialEntity._proof_1
theorem instCoeObjectAggregateMaterialEntity._proof_1
: ∀ (v : qszr71sj.ObjectAggregate), qszr71sj.MaterialEntity.Is (Subtype.val v)

Published by @sam ·

View source in qszr71sj

Definitional, with no premises to accept.