sl0 - brismu bridi

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Theorem sl0 515

Description: Syntax for zero. (Contributed by la korvo, 31-Jul-2024.)

**Assertion**
Ref	Expression
sl0	sumti li 0

**Proof of Theorem sl0**
Step	Hyp	Ref	Expression
1		sli 513	1 sumti li 0

Colors of variables: sumti selbri bridi

Syntax hints: li sli 513 0 p0 514

This theorem is referenced by: succ-zero-ref 522 nat-indi 535 nat-indii 536 nat-ind-cur 537 sumji-no 545 pilji-no 552 gt-zero-ref 556