Wikipedia:Articles for deletion/Daisuke Takahashi (mathematician)
In addition to the news coverage on computing digits of pi, he also has several highly cited papers.  Note that, although he's a computer scientist, he's in numerical analysis, which I believe to be on the lower citation side for that field.  Anyway, between the evidence towards  and  C1, I'm seeing a reasonable argument for keep
— User:Russ, 07:05, 5 December 2019 (UTC)
Stance: keep
Cited policy: WP:GNG||WP:NPROF (Wikipedia:Notability)