Σ index Eq pack 19 Eq pack 13 Σ#12 Batch 22 Matrix 17 Σ#24 Batch 10 Ledger /9 Rxn set 8 Eq pack 25 Σ#18 Rxn set 26 Rxn set 14 Matrix 5 Ledger /3 Matrix 23

Field Notes / Σ /sym/3cad98

id=1 · host=formula-vault.cloud · 2026-10-19 17:20Z

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

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

46K

det| 9 5 ; 1 10 | = 85

468K

iħ ∂ψ/∂t = Ĥψ

det| 1 4 ; 3 2 | = -10

289K

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

278K

3r² + 6r + 7 = 0

7y² + 9y + 1 = 0

339K

11t² + 9t + 7 = 0

177K

det| 9 4 ; 1 10 | = 86

358K

∑_{k=1}^{n} k = n(n+1)/2

121K