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| Mirrors > Home > ILE Home > Th. List > df-starv | GIF version | ||
| Description: Define the involution function of a *-ring. (Contributed by NM, 4-Sep-2011.) (Revised by Mario Carneiro, 14-Aug-2015.) | 
| Ref | Expression | 
|---|---|
| df-starv | ⊢ *𝑟 = Slot 4 | 
| Step | Hyp | Ref | Expression | 
|---|---|---|---|
| 1 | cstv 12757 | . 2 class *𝑟 | |
| 2 | c4 9043 | . . 3 class 4 | |
| 3 | 2 | cslot 12677 | . 2 class Slot 4 | 
| 4 | 1, 3 | wceq 1364 | 1 wff *𝑟 = Slot 4 | 
| Colors of variables: wff set class | 
| This definition is referenced by: starvndx 12816 starvid 12817 starvslid 12818 | 
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