1. Ease Factor Adaptation (EF'):
EF' = max(1.3, EF + (0.1 - (5 - q) × (0.08 + (5 - q) × 0.02)))
where q ∈ {0, 3, 4, 5} maps from user response quality (Again, Hard, Good, Easy).
2. Interval Scheduling (I_n):
I(1) = 1 day, I(2) = 6 days
I(n) = round(I(n-1) × EF' × IntervalModifier)
3. KaTeX Embedding in Cards:
Use $...$ for inline equations or $...$ for centered equations in both Front and Back faces.