Jacobus "Koos" Verhoeff (20 February 1927 – 19 March 2018)[3] was a Dutch mathematician, computer scientist, and artist.
He is known for his work on error detection and correction, and on information retrieval.
[4] He has also held exhibitions of his mathematically inspired sculptures.
He is best known for his check-digit Verhoeff algorithm, which is based on the dihedral group of order 10.
His son, Tom Verhoeff, is a mathematician and computer scientist.