Database
SUPPLEMENTARY MATERIAL (USERS' MATHBOXES)
Mathbox for Zhi Wang
Examples of categories
Thin categories
thincssc
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isthincd2lem1
Metamath Proof Explorer
Ascii
Structured
Theorem
thincssc
Description:
A thin category is a category.
(Contributed by
Zhi Wang
, 17-Sep-2024)
Ref
Expression
Assertion
thincssc
⊢
ThinCat ⊆ Cat
Proof
Step
Hyp
Ref
Expression
1
thincc
⊢
(
𝑐
∈ ThinCat →
𝑐
∈ Cat )
2
1
ssriv
⊢
ThinCat ⊆ Cat