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Description: Lemma for lnopeq0i . (Contributed by NM, 26-Jul-2006) (New usage is discouraged.)
| Ref | Expression | ||
|---|---|---|---|
| Hypothesis | lnopeq0.1 | |- T e. LinOp |
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| Assertion | lnopeq0lem2 | |- ( ( A e. ~H /\ B e. ~H ) -> ( ( T ` A ) .ih B ) = ( ( ( ( ( T ` ( A +h B ) ) .ih ( A +h B ) ) - ( ( T ` ( A -h B ) ) .ih ( A -h B ) ) ) + ( _i x. ( ( ( T ` ( A +h ( _i .h B ) ) ) .ih ( A +h ( _i .h B ) ) ) - ( ( T ` ( A -h ( _i .h B ) ) ) .ih ( A -h ( _i .h B ) ) ) ) ) ) / 4 ) ) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | lnopeq0.1 | |- T e. LinOp |
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| 2 | fveq2 | |- ( A = if ( A e. ~H , A , 0h ) -> ( T ` A ) = ( T ` if ( A e. ~H , A , 0h ) ) ) |
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| 3 | 2 | oveq1d | |- ( A = if ( A e. ~H , A , 0h ) -> ( ( T ` A ) .ih B ) = ( ( T ` if ( A e. ~H , A , 0h ) ) .ih B ) ) |
| 4 | fvoveq1 | |- ( A = if ( A e. ~H , A , 0h ) -> ( T ` ( A +h B ) ) = ( T ` ( if ( A e. ~H , A , 0h ) +h B ) ) ) |
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| 5 | oveq1 | |- ( A = if ( A e. ~H , A , 0h ) -> ( A +h B ) = ( if ( A e. ~H , A , 0h ) +h B ) ) |
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| 6 | 4 5 | oveq12d | |- ( A = if ( A e. ~H , A , 0h ) -> ( ( T ` ( A +h B ) ) .ih ( A +h B ) ) = ( ( T ` ( if ( A e. ~H , A , 0h ) +h B ) ) .ih ( if ( A e. ~H , A , 0h ) +h B ) ) ) |
| 7 | fvoveq1 | |- ( A = if ( A e. ~H , A , 0h ) -> ( T ` ( A -h B ) ) = ( T ` ( if ( A e. ~H , A , 0h ) -h B ) ) ) |
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| 8 | oveq1 | |- ( A = if ( A e. ~H , A , 0h ) -> ( A -h B ) = ( if ( A e. ~H , A , 0h ) -h B ) ) |
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| 9 | 7 8 | oveq12d | |- ( A = if ( A e. ~H , A , 0h ) -> ( ( T ` ( A -h B ) ) .ih ( A -h B ) ) = ( ( T ` ( if ( A e. ~H , A , 0h ) -h B ) ) .ih ( if ( A e. ~H , A , 0h ) -h B ) ) ) |
| 10 | 6 9 | oveq12d | |- ( A = if ( A e. ~H , A , 0h ) -> ( ( ( T ` ( A +h B ) ) .ih ( A +h B ) ) - ( ( T ` ( A -h B ) ) .ih ( A -h B ) ) ) = ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h B ) ) .ih ( if ( A e. ~H , A , 0h ) +h B ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h B ) ) .ih ( if ( A e. ~H , A , 0h ) -h B ) ) ) ) |
| 11 | fvoveq1 | |- ( A = if ( A e. ~H , A , 0h ) -> ( T ` ( A +h ( _i .h B ) ) ) = ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) ) |
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| 12 | oveq1 | |- ( A = if ( A e. ~H , A , 0h ) -> ( A +h ( _i .h B ) ) = ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) |
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| 13 | 11 12 | oveq12d | |- ( A = if ( A e. ~H , A , 0h ) -> ( ( T ` ( A +h ( _i .h B ) ) ) .ih ( A +h ( _i .h B ) ) ) = ( ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) ) |
| 14 | fvoveq1 | |- ( A = if ( A e. ~H , A , 0h ) -> ( T ` ( A -h ( _i .h B ) ) ) = ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) ) |
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| 15 | oveq1 | |- ( A = if ( A e. ~H , A , 0h ) -> ( A -h ( _i .h B ) ) = ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) |
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| 16 | 14 15 | oveq12d | |- ( A = if ( A e. ~H , A , 0h ) -> ( ( T ` ( A -h ( _i .h B ) ) ) .ih ( A -h ( _i .h B ) ) ) = ( ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) ) |
| 17 | 13 16 | oveq12d | |- ( A = if ( A e. ~H , A , 0h ) -> ( ( ( T ` ( A +h ( _i .h B ) ) ) .ih ( A +h ( _i .h B ) ) ) - ( ( T ` ( A -h ( _i .h B ) ) ) .ih ( A -h ( _i .h B ) ) ) ) = ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) ) ) |
| 18 | 17 | oveq2d | |- ( A = if ( A e. ~H , A , 0h ) -> ( _i x. ( ( ( T ` ( A +h ( _i .h B ) ) ) .ih ( A +h ( _i .h B ) ) ) - ( ( T ` ( A -h ( _i .h B ) ) ) .ih ( A -h ( _i .h B ) ) ) ) ) = ( _i x. ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) ) ) ) |
| 19 | 10 18 | oveq12d | |- ( A = if ( A e. ~H , A , 0h ) -> ( ( ( ( T ` ( A +h B ) ) .ih ( A +h B ) ) - ( ( T ` ( A -h B ) ) .ih ( A -h B ) ) ) + ( _i x. ( ( ( T ` ( A +h ( _i .h B ) ) ) .ih ( A +h ( _i .h B ) ) ) - ( ( T ` ( A -h ( _i .h B ) ) ) .ih ( A -h ( _i .h B ) ) ) ) ) ) = ( ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h B ) ) .ih ( if ( A e. ~H , A , 0h ) +h B ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h B ) ) .ih ( if ( A e. ~H , A , 0h ) -h B ) ) ) + ( _i x. ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) ) ) ) ) |
| 20 | 19 | oveq1d | |- ( A = if ( A e. ~H , A , 0h ) -> ( ( ( ( ( T ` ( A +h B ) ) .ih ( A +h B ) ) - ( ( T ` ( A -h B ) ) .ih ( A -h B ) ) ) + ( _i x. ( ( ( T ` ( A +h ( _i .h B ) ) ) .ih ( A +h ( _i .h B ) ) ) - ( ( T ` ( A -h ( _i .h B ) ) ) .ih ( A -h ( _i .h B ) ) ) ) ) ) / 4 ) = ( ( ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h B ) ) .ih ( if ( A e. ~H , A , 0h ) +h B ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h B ) ) .ih ( if ( A e. ~H , A , 0h ) -h B ) ) ) + ( _i x. ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) ) ) ) / 4 ) ) |
| 21 | 3 20 | eqeq12d | |- ( A = if ( A e. ~H , A , 0h ) -> ( ( ( T ` A ) .ih B ) = ( ( ( ( ( T ` ( A +h B ) ) .ih ( A +h B ) ) - ( ( T ` ( A -h B ) ) .ih ( A -h B ) ) ) + ( _i x. ( ( ( T ` ( A +h ( _i .h B ) ) ) .ih ( A +h ( _i .h B ) ) ) - ( ( T ` ( A -h ( _i .h B ) ) ) .ih ( A -h ( _i .h B ) ) ) ) ) ) / 4 ) <-> ( ( T ` if ( A e. ~H , A , 0h ) ) .ih B ) = ( ( ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h B ) ) .ih ( if ( A e. ~H , A , 0h ) +h B ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h B ) ) .ih ( if ( A e. ~H , A , 0h ) -h B ) ) ) + ( _i x. ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) ) ) ) / 4 ) ) ) |
| 22 | oveq2 | |- ( B = if ( B e. ~H , B , 0h ) -> ( ( T ` if ( A e. ~H , A , 0h ) ) .ih B ) = ( ( T ` if ( A e. ~H , A , 0h ) ) .ih if ( B e. ~H , B , 0h ) ) ) |
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| 23 | oveq2 | |- ( B = if ( B e. ~H , B , 0h ) -> ( if ( A e. ~H , A , 0h ) +h B ) = ( if ( A e. ~H , A , 0h ) +h if ( B e. ~H , B , 0h ) ) ) |
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| 24 | 23 | fveq2d | |- ( B = if ( B e. ~H , B , 0h ) -> ( T ` ( if ( A e. ~H , A , 0h ) +h B ) ) = ( T ` ( if ( A e. ~H , A , 0h ) +h if ( B e. ~H , B , 0h ) ) ) ) |
| 25 | 24 23 | oveq12d | |- ( B = if ( B e. ~H , B , 0h ) -> ( ( T ` ( if ( A e. ~H , A , 0h ) +h B ) ) .ih ( if ( A e. ~H , A , 0h ) +h B ) ) = ( ( T ` ( if ( A e. ~H , A , 0h ) +h if ( B e. ~H , B , 0h ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h if ( B e. ~H , B , 0h ) ) ) ) |
| 26 | oveq2 | |- ( B = if ( B e. ~H , B , 0h ) -> ( if ( A e. ~H , A , 0h ) -h B ) = ( if ( A e. ~H , A , 0h ) -h if ( B e. ~H , B , 0h ) ) ) |
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| 27 | 26 | fveq2d | |- ( B = if ( B e. ~H , B , 0h ) -> ( T ` ( if ( A e. ~H , A , 0h ) -h B ) ) = ( T ` ( if ( A e. ~H , A , 0h ) -h if ( B e. ~H , B , 0h ) ) ) ) |
| 28 | 27 26 | oveq12d | |- ( B = if ( B e. ~H , B , 0h ) -> ( ( T ` ( if ( A e. ~H , A , 0h ) -h B ) ) .ih ( if ( A e. ~H , A , 0h ) -h B ) ) = ( ( T ` ( if ( A e. ~H , A , 0h ) -h if ( B e. ~H , B , 0h ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h if ( B e. ~H , B , 0h ) ) ) ) |
| 29 | 25 28 | oveq12d | |- ( B = if ( B e. ~H , B , 0h ) -> ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h B ) ) .ih ( if ( A e. ~H , A , 0h ) +h B ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h B ) ) .ih ( if ( A e. ~H , A , 0h ) -h B ) ) ) = ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h if ( B e. ~H , B , 0h ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h if ( B e. ~H , B , 0h ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h if ( B e. ~H , B , 0h ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h if ( B e. ~H , B , 0h ) ) ) ) ) |
| 30 | oveq2 | |- ( B = if ( B e. ~H , B , 0h ) -> ( _i .h B ) = ( _i .h if ( B e. ~H , B , 0h ) ) ) |
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| 31 | 30 | oveq2d | |- ( B = if ( B e. ~H , B , 0h ) -> ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) = ( if ( A e. ~H , A , 0h ) +h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) |
| 32 | 31 | fveq2d | |- ( B = if ( B e. ~H , B , 0h ) -> ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) = ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) ) |
| 33 | 32 31 | oveq12d | |- ( B = if ( B e. ~H , B , 0h ) -> ( ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) = ( ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) ) |
| 34 | 30 | oveq2d | |- ( B = if ( B e. ~H , B , 0h ) -> ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) = ( if ( A e. ~H , A , 0h ) -h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) |
| 35 | 34 | fveq2d | |- ( B = if ( B e. ~H , B , 0h ) -> ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) = ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) ) |
| 36 | 35 34 | oveq12d | |- ( B = if ( B e. ~H , B , 0h ) -> ( ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) = ( ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) ) |
| 37 | 33 36 | oveq12d | |- ( B = if ( B e. ~H , B , 0h ) -> ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) ) = ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) ) ) |
| 38 | 37 | oveq2d | |- ( B = if ( B e. ~H , B , 0h ) -> ( _i x. ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) ) ) = ( _i x. ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) ) ) ) |
| 39 | 29 38 | oveq12d | |- ( B = if ( B e. ~H , B , 0h ) -> ( ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h B ) ) .ih ( if ( A e. ~H , A , 0h ) +h B ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h B ) ) .ih ( if ( A e. ~H , A , 0h ) -h B ) ) ) + ( _i x. ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) ) ) ) = ( ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h if ( B e. ~H , B , 0h ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h if ( B e. ~H , B , 0h ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h if ( B e. ~H , B , 0h ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h if ( B e. ~H , B , 0h ) ) ) ) + ( _i x. ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) ) ) ) ) |
| 40 | 39 | oveq1d | |- ( B = if ( B e. ~H , B , 0h ) -> ( ( ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h B ) ) .ih ( if ( A e. ~H , A , 0h ) +h B ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h B ) ) .ih ( if ( A e. ~H , A , 0h ) -h B ) ) ) + ( _i x. ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) ) ) ) / 4 ) = ( ( ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h if ( B e. ~H , B , 0h ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h if ( B e. ~H , B , 0h ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h if ( B e. ~H , B , 0h ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h if ( B e. ~H , B , 0h ) ) ) ) + ( _i x. ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) ) ) ) / 4 ) ) |
| 41 | 22 40 | eqeq12d | |- ( B = if ( B e. ~H , B , 0h ) -> ( ( ( T ` if ( A e. ~H , A , 0h ) ) .ih B ) = ( ( ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h B ) ) .ih ( if ( A e. ~H , A , 0h ) +h B ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h B ) ) .ih ( if ( A e. ~H , A , 0h ) -h B ) ) ) + ( _i x. ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h ( _i .h B ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h ( _i .h B ) ) ) ) ) ) / 4 ) <-> ( ( T ` if ( A e. ~H , A , 0h ) ) .ih if ( B e. ~H , B , 0h ) ) = ( ( ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h if ( B e. ~H , B , 0h ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h if ( B e. ~H , B , 0h ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h if ( B e. ~H , B , 0h ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h if ( B e. ~H , B , 0h ) ) ) ) + ( _i x. ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) ) ) ) / 4 ) ) ) |
| 42 | ifhvhv0 | |- if ( A e. ~H , A , 0h ) e. ~H |
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| 43 | ifhvhv0 | |- if ( B e. ~H , B , 0h ) e. ~H |
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| 44 | 1 42 43 | lnopeq0lem1 | |- ( ( T ` if ( A e. ~H , A , 0h ) ) .ih if ( B e. ~H , B , 0h ) ) = ( ( ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h if ( B e. ~H , B , 0h ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h if ( B e. ~H , B , 0h ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h if ( B e. ~H , B , 0h ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h if ( B e. ~H , B , 0h ) ) ) ) + ( _i x. ( ( ( T ` ( if ( A e. ~H , A , 0h ) +h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) .ih ( if ( A e. ~H , A , 0h ) +h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) - ( ( T ` ( if ( A e. ~H , A , 0h ) -h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) .ih ( if ( A e. ~H , A , 0h ) -h ( _i .h if ( B e. ~H , B , 0h ) ) ) ) ) ) ) / 4 ) |
| 45 | 21 41 44 | dedth2h | |- ( ( A e. ~H /\ B e. ~H ) -> ( ( T ` A ) .ih B ) = ( ( ( ( ( T ` ( A +h B ) ) .ih ( A +h B ) ) - ( ( T ` ( A -h B ) ) .ih ( A -h B ) ) ) + ( _i x. ( ( ( T ` ( A +h ( _i .h B ) ) ) .ih ( A +h ( _i .h B ) ) ) - ( ( T ` ( A -h ( _i .h B ) ) ) .ih ( A -h ( _i .h B ) ) ) ) ) ) / 4 ) ) |