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 00:19Z

∑_{k=1}^{n} k = n(n+1)/2

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

168K

∑_{k=1}^{n} k = n(n+1)/2

446K

3x² + 3x + 6 = 0

det| 9 4 ; 1 10 | = 86

144K

7γ² + 8γ + 3 = 0

371K

∇²t = 0

d/dt [t^3] = 3t^2

259K

d/dγ [γ^3] = 3γ^2

86K

4t² + 3t + 3 = 0

224K

6n² + 7n + 6 = 0

234K

\frac{12}{6} \sum_{i=1}^{n} i^{2}

218K

det| 4 7 ; 2 5 | = 6

354K

5φ² + 1φ + 1 = 0

70K