Riesz's lemma

Summary

Riesz's lemma is a lemma^[1]. It draws 39 Wikipedia views per month (lemma category, ranking #18 of 67).^[2]

Key Facts

• Riesz's lemma's instance of is recorded as lemma^[3].
• Riesz's lemma's instance of is recorded as theorem^[4].
• Frigyes Riesz is named after Riesz's lemma^[5].
• Riesz's lemma's Freebase ID is recorded as /m/0dtth1^[6].
• Riesz's lemma's defining formula is recorded as d(x, Y) = \inf_{y \in Y} |x - y|^[7].
• Riesz's lemma's maintained by WikiProject is recorded as WikiProject Mathematics^[8].
• Riesz's lemma's Microsoft Academic ID is recorded as 2776224457^[9].

Why It Matters

Riesz's lemma draws 39 Wikipedia views per month (lemma category, ranking #18 of 67).^[2] It has Wikipedia articles in 10 language editions, a strong signal of global cultural recognition.^[10] It is known by 4 alternative names across languages and contexts.^[11]