14-year-old Ukrainian Marta Kostyuk defeated top seed French Open champion Rebeka Masarova in Australian Open final, Joinfo.com reports with reference to 112 Ukraine TV channel.
“The outstanding victory of the Ukrainian tennis player! Marta Kostyuk won the Australian Open junior tournament, beating top seed Swiss racket Rebeka Masarova in the finals!” the National Olympic Committee said in a statement.
Ukrainian President Petro Poroshenko congratulated the tennis player with a victory, noting that it is for the first time in history when Ukrainian became the champion of the junior Australian Open.
The 14-year-old Ukrainian tennis player defeated Russian Elena Rybakina at the semifinals to win this tournament.
Ukrainian scientist Maryna Viazovska has been awarded the Salem Prize 2016, a prestigious distinction in mathematics. Viazovska has solved two high-dimensional versions of the “sphere packing” problem. In dimensions 8 and 24, she proved that two highly symmetrical arrangements pack spheres together in the densest possible way, Joinfo.com reports with reference to UNIAN.
The famous astronomer Johannes Kepler was first to outline the problem in 1611 because of the need to find the best ways to transport cannonballs on a ship. Though a solution to this problem of packing spheres in 2 dimensions seemed obvious, it was proven only in 1940.
Only two cases of the most effective packing of spheres were proven – for dimensions 2 and 3.
Viazovska proved that the densest packing of spheres in an 8-dimensional space is determined by the crystal lattice E8, in a 24-dimensional space – by the Leech lattice.
This grid was built by the British mathematician Leech in connection with so-called Golay code (code error correction), which is used to transfer spacecraft “Voyager” pictures of Jupiter and Saturn.
The problem of the most effective ways of packing in 2-3 dimension space is also important for further application in crystallography, chemistry, and nanotechnology. Its practical application related to 8 or 24 dimensions is not that obvious, but unexpected results in the future are possible.
The discovery is highly important for mathematics itself. Viazovska is a researcher at the Berlin Mathematical School and the Humboldt University of Berlin.
In 2010, she defended a PhD thesis at the Institute of Mathematics of the National Academy of Science titled “Inequalities for polynomial and rational functions and quadrature formulas on the field.”
In 2013 she got a PhD in natural sciences at the University of Bonn with a thesis “Modular functions and special cycles.”
Ukrainian President Petro Poroshenko on Saturday, January 28, congratulated the Ukrainian people on the “Flag Birthday”, noting that the national flag of Ukraine symbolizes the dreams of freedom, Unian reports.
“On this day, January 28, 1992, the Verkhovna Rada has officially approved the blue-yellow flag the national flag of Ukraine. Our flag was born from the people’s traditional dreams of freedom. The combination of blue and yellow colors – is the embodiment of a dream of Ukrainians about peaceful and bread-rich and prosperous life,” the president said.
The National Flag is one of Ukraine’s three official state symbols, symbolizing the sovereignty of the State. The flag has a shape of two horizontal bands of blue and yellow. In August 2004, the then-President Leonid Kuchma signed a decree on the establishment of the National Flag Day, to be celebrated August 23.