theorem BFO.MaterialEntityOrSite.materialEntity.sizeOf_spec
theorem BFO.MaterialEntityOrSite.materialEntity.sizeOf_spec: ∀ (a : hz46pbq2.BFO.MaterialEntity), sizeOf (hz46pbq2.BFO.MaterialEntityOrSite.materialEntity a) = 1 + sizeOf a
theorem BFO.MaterialEntityOrSite.materialEntity.sizeOf_spec
theorem BFO.MaterialEntityOrSite.materialEntity.sizeOf_spec: ∀ (a : hz46pbq2.BFO.MaterialEntity), sizeOf (hz46pbq2.BFO.MaterialEntityOrSite.materialEntity a) = 1 + sizeOf a