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 00:51Z

∑_{k=1}^{n} k = n(n+1)/2

∑_{k=1}^{n} k = n(n+1)/2

168K

N₂ + 3H₂ ⇌ 2NH₃

446K

3x² + 3x + 6 = 0

F = G m₁m₂ / r²

144K

det| 9 6 ; 0 10 | = 90

371K

∇²t = 0

det| 7 4 ; 4 8 | = 40

259K

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

86K

7z² + 2z + 0 = 0

det| 3 7 ; 2 4 | = -2

224K

∑_{k=1}^{n} k = n(n+1)/2

234K

∇ × E = −∂B/∂t

218K

d/dψ [ψ^7] = 7ψ^6

354K