Wikipedia:Articles for deletion/Russian School of Mathematics
it looks like  is satisfied. https://www.google.com/search?q=%22Russian+school+of+mathematics%22&newwindow=1&rlz=1C1CHBD_enAU884AU886&biw=2048&bih=1038&tbm=nws&sxsrf=ALeKk00cgOsQWTHTyGoXr1zAgejyzCR4YA%3A1622276203922&ei=a_ixYOblN4Taz7sP2beHuAs&oq=%22Russian+school+of+mathematics%22&gs_l=psy-ab.3..0l10.927030.930703.0.931058.2.2.0.0.0.0.167.327.0j2.2.0....0...1c.1.64.psy-ab..0.2.327...0i67k1j0i7i30k1.0.xs2GadXfSx8 this search is showing 6 pages of relevant results in various independent news sources. I have added a few sources from the top of the search results
— User:Alex, 09:03, 29 May 2021 (UTC)
Stance: keep
Cited policy: WP:GNG (Wikipedia:Notability)