Martín Fiz Martín Fiz Martín Fiz Martín (born 3 March 1963 in Vitoria-Gasteiz, Álava) is a former long-distance runner from Spain, who won the marathon at the 1994 European Championships in Athletics in Helsinki and repeated his success at the 1995 World Championships in Athletics in Gothenburg. The same year he captured the title in the Rotterdam Marathon. At the 1996 Summer Olympics in Atlanta Fiz came fourth in the Athletics at the 1996 Summer Olympics - Men's marathon. A year later he won a silver medal at the 1997 World Championships in Athletics in Athens, finishing behind his countryman Abel Anton.
Abel equation of the first kind Abel equation of the first kind In mathematics, an Abel equation of the first kind, named after Niels Henrik Abel, is any ordinary differential equation that is cubic in the unknown function. In other words, it is an equation of the form where formula_2. If formula_3 and formula_4, or formula_5 and formula_4, the equation reduces to a Bernoulli equation, while if formula_7 the equation reduces to a Riccati equation. The substitution formula_8 brings the Abel equation of the first kind to the "Abel equation of the second kind" of the form The substitution brings the Abel equation of the first