Σ index Rxn set 8 Ledger /9 Σ#24 Ledger /3 Ledger /15 Σ#12 Matrix 11 Batch 22 Eq pack 19 Matrix 17 Eq pack 13 Batch 16 Ledger /27 Eq pack 7

Symbolic Index /sym/ea4bfa

id=1 · host=au.commstar.world · 2026-10-20 14:54Z

∑_{k=1}^{n} k = n(n+1)/2

det| 1 4 ; 2 2 | = -6

244K

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

52K

det| 12 5 ; 4 13 | = 136

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

90K

∑_{k=1}^{n} k = n(n+1)/2

91K

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

det| 5 3 ; 2 6 | = 24

100K

∇²r = 0

50K

det| 4 9 ; 7 5 | = -43

\frac{12}{7} \sum_{i=1}^{n} i^{2}

137K

det| 2 7 ; 7 3 | = -43

197K

det| 1 1 ; 3 2 | = -1

det| 9 4 ; 1 10 | = 86

262K

∫₀^∞ e^(-φ²) dφ = √π / 2

196K

∑_{k=1}^{n} k = n(n+1)/2

218K

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