Alternative Equation Formats

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MathML

∥ ψ^{(k)} - ψ^{(k - 1)} ∥_{2} \leq r

∥ ψ^{(k)} - ψ^{(k - 1)} ∥_{2} \leq r

\[ \parallel \bpsi ^{(k)} - \bpsi ^{(k-1)} \parallel _2 \leq \Argument{r} \]