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Description: If the operation value of the operation value of two nested maps-to notation is not empty, all involved arguments belong to the corresponding base classes of the maps-to notations. Using implicit substitution. (Contributed by AV, 21-May-2021)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | el2mpocl.o | ||
| el2mpocl.e | |||
| Assertion | el2mpocl |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | el2mpocl.o | ||
| 2 | el2mpocl.e | ||
| 3 | 1 | el2mpocsbcl | |
| 4 | simpl | ||
| 5 | simplr | ||
| 6 | 2 | simpld | |
| 7 | 6 | adantll | |
| 8 | 5 7 | csbied | |
| 9 | 4 8 | csbied | |
| 10 | 9 | eleq2d | |
| 11 | 2 | simprd | |
| 12 | 11 | adantll | |
| 13 | 5 12 | csbied | |
| 14 | 4 13 | csbied | |
| 15 | 14 | eleq2d | |
| 16 | 10 15 | anbi12d | |
| 17 | 16 | biimpd | |
| 18 | 17 | imdistani | |
| 19 | 3 18 | syl6 |