Emmanuel Osbert Cajayon

Emmanuel Osbert Cajayon is a Filipino mathematics competitor who represented the Philippines at the 59th International Mathematical Olympiad (IMO 2018) in Cluj-Napoca, Romania, winning a Bronze Medal with 17 points (rank 250). As a student of Emilio Aguinaldo College-Cavite he was a fixture on the national olympiad circuit: 1st runner-up (top champion) at the 20th Philippine Mathematical Olympiad in 2017, Honorable Mention at APMO 2018, and a DOST Youth Excellence in Science (YES) awardee who gave the student response at the 11th YES Award. His IMO bronze was part of a record medal run for the Philippines.

Notes6

• Concordant but UNVERIFIED: in Dec 2019 a Quezon City police report named a 19-year-old 'Emmanuel Osbert Cajayon', a UP student resident of Bgy. UP Campus, found dead in his boarding-house room with a plastic bag over his head (investigated as possible suicide/foul play). The name is an exact, uncommon match to the IMO medalist, but no source links the olympiad identity to this death; if the same person, this is the subject's apparent fate. Recorded as unconfirmed, not asserted as fact.Dec 7, 2019
• All public traces place him in a pre-university context through 2018; there is no professional or adult-career record, consistent with a young competitor whose later trajectory is private or ended early.Jun 30, 2018
• DOST selected him as a Youth Excellence in Science awardee to give the student response at the 11th YES Award, holding him up publicly as a model young scientist beyond competition results.Feb 1, 2019
• His IMO 2018 bronze came in the Philippines' breakthrough year (the team's record haul included Albert Patupat's gold); he was one of two bronze medalists alongside Shaquille Wyan Que, marking him as part of the cohort that lifted PH olympiad performance.Oct 14, 2018
• Ranked among the country's top math champions as a high schooler (PMO 2017 1st runner-up, behind champion Kyle Patrick Dulay), which earned him the national IMO 2018 slot.Jan 28, 2018