Luis Rada Salvosa

After passing the highly competitive examination given by the US Army, Luis would be the fourth Philippine candidate to West Point, the US Military Academy, While a cadet at West Point, he would eventually apply for, and be granted, a legal change to his name from 'Luis Salvosa y Rada' to 'Luis Rada Salvosa' (endorsed by the War Department, The Adjustant General's Office in April of 1912). He would graduate from West Point in 1917, serve under the United States Army (assigned to the Philippine Scouts) from 1917 to 1922. He would resign his commission as Major and receive an honourable discharge in 1922.

Luis would be sent as a pensionado to study actuarial mathematics (1927) and then mathematical statistics at the University of Michigan. He would develop a life-long friendship with fellow pensionado Exequiel Sunico Sevilla who had also been sent to the University of Michigan in 1927 to take up actuarial mathematics. The two, together with Emeterio Chavez Roa and Manuel Ochoa Hizon would be collectively known as the Gang of Four (the Philippines' four actuarial pioneers).

He wrote two books on mathematics:
1) Table for Statisticians (1935; Edwards Brothers Inc.; Michigan USA)
2) Generalizations of the Normal Curve of Error (1930; Edwards Brothers Inc.; Michigan USA)

References:

1) An army for independence? The American roots of the Philippine Army; Richard Bruce Meixsel, Ph.D.; Ohio State University; 1993; https://etd.ohiolink.edu/apexprod/rws_etd/send_file/send?accession=...

2) Luis Rada Salvosa; Samuel P. Fernandez; The Cabletow; September 1978; https://grandlodge.ph/sites/default/files/cabletow/Cabletow1978-9.pdf