Σ index Eq pack 19 Rxn set 20 Rxn set 26 Σ#24 Σ#12 Ledger /21 Eq pack 13 Ledger /3 Eq pack 1 Batch 16 Σ#18 Σ#6 Ledger /15 Batch 4

Field Notes / Σ /sym/3cad98

id=1 · host=formula-vault.cloud · 2026-10-20 00:01Z

∑_{k=1}^{n} k = n(n+1)/2

iħ ∂ψ/∂t = Ĥψ

168K

\binom{n}{k} = \frac{n!}{k!(n-k)!}

446K

3x² + 3x + 6 = 0

det| 9 4 ; 1 10 | = 86

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det| 3 1 ; 7 4 | = 5

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∇²t = 0

∇ × E = −∂B/∂t

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∇²β = 0

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H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

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H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

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F = G m₁m₂ / r²

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∇²z = 0

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7y² + 9y + 1 = 0

70K