Federico Villarreal, Peruvian mathematician and astronomer (Túcume, Lambayeque 31 August 1850 – Barranco, Lima 03 June
1923) Authored over 600 works and
scientific notes Developed method to raise any
polynomial to any power or Villarreal polynomial (1873) Enunciated 3 theorems about divisibility criteria being two of them (in Aportes a la teoria de los numeros 1897) 1) the ratio between two numbers represented by same digits in two distinct systems of basis enumeration is divisible by basis difference 2) a number is divisible by a
certain divisor if it is the sum of its digits when one write in enumeration
system in which the basis is the divisor plus a unit Obtained a generalization formula
for Bernoulli integration formula (1879) in Integración por Traspasos Obtained a fourth degree differential equation for flexion problem of a truss Enunciated theorems about inertial
moments and central nuclei of regular polygons (1911) in Tratado de Resistencia
de Materiales Discovered embedment moments Discovered new formulas for studying
semiregular solids First to study the inscribed sphere
in edges of regular and semiregular bodies and the sphere that have polyhedral
faces as tangential planes Solved the theoretical problem of
disruptive discharge obtaining Thompson formula for oscillations period of a
capacitor in Descarga Oscilante en un Condensador (1916) Developed a simple method for determination of meridian, sun time, geographical latitude and longitude Metodo
para determinar la latitude y longitude de los lugares del Perú (una tecnica
sencilla para la determinación de meridianos, la hora solar, las latitudes e
longitudes geograficas) EPONYMY Villarreal polynomials Villarreal child problem (1906) Villarreal recurring formula LINKS |
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