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| Mirrors > Home > MPE Home > Th. List > df-tset | Structured version Visualization version GIF version | ||
| Description: Define the topology component of a topological space (structure). (Contributed by NM, 4-Sep-2011.) (Revised by Mario Carneiro, 14-Aug-2015.) Use its index-independent form tsetid 17412 instead. (New usage is discouraged.) |
| Ref | Expression |
|---|---|
| df-tset | ⊢ TopSet = Slot 9 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | cts 17317 | . 2 class TopSet | |
| 2 | c9 12355 | . . 3 class 9 | |
| 3 | 2 | cslot 17228 | . 2 class Slot 9 |
| 4 | 1, 3 | wceq 1537 | 1 wff TopSet = Slot 9 |
| Colors of variables: wff setvar class |
| This definition is referenced by: tsetndx 17411 tsetid 17412 oppgtsetOLD 19395 mgptsetOLD 20172 sratsetOLD 21212 eltpsgOLD 22971 indistpsALTOLD 23042 |
| Copyright terms: Public domain | W3C validator |