Talk:Input-to-state stability

Mixing of | and \| for norm

In the definition $|x(t)|\leq \beta (|x_{0}|,t)+\gamma (\|u\|_{\infty })$ it appears the single bar | represents the euclidean norm and the double bar represents the L-infinity norm of the signal u(t). Am I interpreting this correctly? It should probably be mentioned in the article. Alexandergisi (talk) 18:59, 27 April 2025 (UTC)