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 14:39Z

∑_{k=1}^{n} k = n(n+1)/2

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

244K

Fe₂O₃ + 3CO → 2Fe + 3CO₂

52K

det| 12 5 ; 4 13 | = 136

det| 7 4 ; 4 8 | = 40

90K

\lim_{t\to 0} \frac{\sin t}{t} = 1

91K

H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O

det| 10 5 ; 4 11 | = 90

100K

ΔS ≥ 0

50K

AgNO₃ + NaCl → AgCl↓ + NaNO₃

137K

N₂ + 3H₂ ⇌ 2NH₃

197K

∑_{k=1}^{n} k = n(n+1)/2

262K

∫₀^∞ e^(-t²) dt = √π / 2

196K

∑_{k=1}^{n} k = n(n+1)/2

218K

∂y/∂γ = 8y

299K

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