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Definition df-tmd 21923
Description: Define the class of all topological monoids. A topological monoid is a monoid whose operation is continuous. (Contributed by Mario Carneiro, 19-Sep-2015.)
Assertion
Ref Expression
df-tmd TopMnd = {𝑓 ∈ (Mnd ∩ TopSp) ∣ [(TopOpen‘𝑓) / 𝑗](+𝑓𝑓) ∈ ((𝑗 ×t 𝑗) Cn 𝑗)}
Distinct variable group:   𝑓,𝑗

Detailed syntax breakdown of Definition df-tmd
StepHypRef Expression
1 ctmd 21921 . 2 class TopMnd
2 vf . . . . . . 7 setvar 𝑓
32cv 1522 . . . . . 6 class 𝑓
4 cplusf 17286 . . . . . 6 class +𝑓
53, 4cfv 5926 . . . . 5 class (+𝑓𝑓)
6 vj . . . . . . . 8 setvar 𝑗
76cv 1522 . . . . . . 7 class 𝑗
8 ctx 21411 . . . . . . 7 class ×t
97, 7, 8co 6690 . . . . . 6 class (𝑗 ×t 𝑗)
10 ccn 21076 . . . . . 6 class Cn
119, 7, 10co 6690 . . . . 5 class ((𝑗 ×t 𝑗) Cn 𝑗)
125, 11wcel 2030 . . . 4 wff (+𝑓𝑓) ∈ ((𝑗 ×t 𝑗) Cn 𝑗)
13 ctopn 16129 . . . . 5 class TopOpen
143, 13cfv 5926 . . . 4 class (TopOpen‘𝑓)
1512, 6, 14wsbc 3468 . . 3 wff [(TopOpen‘𝑓) / 𝑗](+𝑓𝑓) ∈ ((𝑗 ×t 𝑗) Cn 𝑗)
16 cmnd 17341 . . . 4 class Mnd
17 ctps 20784 . . . 4 class TopSp
1816, 17cin 3606 . . 3 class (Mnd ∩ TopSp)
1915, 2, 18crab 2945 . 2 class {𝑓 ∈ (Mnd ∩ TopSp) ∣ [(TopOpen‘𝑓) / 𝑗](+𝑓𝑓) ∈ ((𝑗 ×t 𝑗) Cn 𝑗)}
201, 19wceq 1523 1 wff TopMnd = {𝑓 ∈ (Mnd ∩ TopSp) ∣ [(TopOpen‘𝑓) / 𝑗](+𝑓𝑓) ∈ ((𝑗 ×t 𝑗) Cn 𝑗)}
Colors of variables: wff setvar class
This definition is referenced by:  istmd  21925
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