t:ioa{i:l}(). t.frame 
Collection(frame())A:Type, B:(A
Type), p:(a:A
B(a)). 2of(p) B(1of(p))| Who Cites ioa frame? | |
| ioa_frame | Def t.frame == 2of(2of(2of(2of(2of(t))))) |
| Thm* t:ioa{i:l}(). t.frame Collection(frame()) | |
| pi2 | Def 2of(t) == t.2 |
| Thm* A:Type, B:(AType), p:(a:AB(a)). 2of(p) B(1of(p)) |
| Syntax: | t.frame | has structure: | ioa_frame(t) |
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