`BookProof.DirectSumEdge.coe_eq_zero_of_notMem_supportFinset` {x : dsCore D} {i : ι} (hi : i ∉ supportFinset x) : ((x : lp G 2) : ∀ i, G i) i = 0

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`BookProof.DirectSumEdge.coe_eq_zero_of_notMem_supportFinset` {x : dsCore D} {i : ι} (hi : i ∉ supportFinset x) : ((x : lp G 2) : ∀ i, G i) i = 0 · Prove2Me