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 00:23Z

∑_{k=1}^{n} k = n(n+1)/2

∑_{k=1}^{n} k = n(n+1)/2

168K

∇ × E = −∂B/∂t

446K

3x² + 3x + 6 = 0

Fe₂O₃ + 3CO → 2Fe + 3CO₂

144K

11ψ² + 6ψ + 2 = 0

371K

∇²t = 0

F = G m₁m₂ / r²

259K

det| 10 2 ; 3 11 | = 104

86K

7z² + 2z + 0 = 0

det| 1 4 ; 3 2 | = -10

224K

det| 7 2 ; 7 8 | = 42

234K

det| 4 2 ; 5 5 | = 10

det| 7 4 ; 4 8 | = 40

218K

∇²γ = 0

354K

2H₂ + O₂ → 2H₂O

e^{i\pi} + 1 = 0

70K

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

402K

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