Amrik Singh Nimbran, retired Indian Police Service officer and amateur mathematician.
Amrik Singh Nimran was born into a Dalit family at Gurgaon, Haryana.
(Patna Zone) and later appointed as DGP of Bihar (Fire Service and Home Guard).
[4] He is the first State Security Advisor of Bihar and included under Jitan Ram Manjhi's government.
[5] He is an amateur mathematician and his papers have been published in the Indian Journal of Pure and Applied Mathematics and Indian Math Society in 2016 and The Ramanujan Journal in 2018 regarding Generalized Wallis-Euler Products and New Infinite Products for π.