On the left is Shankara Naryana (RIP 2004? to 2020 [BRAT adoption from a nebraska puppy mill]). His namesake was an 8th century indian mathematician who advocated the use of the hindu-arabic numbering system, developed base 10 and zero as a place holder. The numbers we use today (1 thru 10 or 0 thru 9; however you want to look at it).
Madhava, the monochrome basenji, 5 year old male from portland, oregon. His name sake was a 12th century indian mathematician who developed "taylor series". The tri is a 10 year old female from portland, oregon. Her name sake was a 6th century indian mathematician who developed the quadratic equation.