t:rel(). t.name 
relname()A:Type, B:(A
Type), p:(a:A
B(a)). 1of(p) A| Who Cites rel name? | |
| rel_name | Def t.name == 1of(t) |
| Thm* t:rel(). t.name relname() | |
| pi1 | Def 1of(t) == t.1 |
| Thm* A:Type, B:(AType), p:(a:AB(a)). 1of(p) A |
| Syntax: | t.name | has structure: | rel_name(t) |
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