🌐EnglishEnglishDeutschFrançaisItalianoNederlandsPolskiРусский中文日本語EntityQ776602· pop 10· linked from 70 articlesexpander graphsparse graph used in the combinatorics branch of mathematicsAvailable in 10 languagesFrançaisDeutsch中文РусскийCzechHebrewMongolianPolskiUkrainianvia Wikidata sitelinks · CC0Connectionseigenvectors and eigenvaluesEntitycomputer scienceEntityCategoriesGraph families