With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Henri Poincare was a mathematician.
text_B: Jules Henri Poincare -LRB- -LSB- ʒyl ɑʁi pwɛkaʁe -RSB- ; 29 April 1854 -- 17 July 1912 -RRB- was a French mathematician , theoretical physicist , engineer , and philosopher of science .. theoretical physicist. theoretical physicist. philosopher of science. philosophy of science. He is often described as a polymath , and in mathematics as The Last Universalist by Eric Temple Bell , since he excelled in all fields of the discipline as it existed during his lifetime .. polymath. polymath. Eric Temple Bell. Eric Temple Bell. As a mathematician and physicist , he made many original fundamental contributions to pure and applied mathematics , mathematical physics , and celestial mechanics .. physics. physics. pure. Pure mathematics. applied mathematics. applied mathematics. mathematical physics. mathematical physics. celestial mechanics. celestial mechanics. He was responsible for formulating the Poincare conjecture , which was one of the most famous unsolved problems in mathematics until it was solved in 2002 -- 2003 by Grigori Perelman .. Poincare conjecture. Poincare conjecture. unsolved problems in mathematics. unsolved problems in mathematics. Grigori Perelman. Grigori Perelman. In his research on the three-body problem , Poincare became the first person to discover a chaotic deterministic system which laid the foundations of modern chaos theory .. three-body problem. three-body problem. chaos theory. chaos theory. He is also considered to be one of the founders of the field of topology .. topology. topology. Poincare made clear the importance of paying attention to the invariance of laws of physics under different transformations , and was the first to present the Lorentz transformations in their modern symmetrical form .. physics. physics. Lorentz transformations. Lorentz transformations. Poincare discovered the remaining relativistic velocity transformations and recorded them in a letter to Dutch physicist Hendrik Lorentz -LRB- 1853 -- 1928 -RRB- in 1905 .. Hendrik Lorentz. Hendrik Lorentz. Thus he obtained perfect invariance of all of Maxwell 's equations , an important step in the formulation of the theory of special relativity .. special relativity. special relativity. In 1905 , Poincare first proposed gravitational waves -LRB- ondes gravifiques -RRB- emanating from a body and propagating at the speed of light as being required by the Lorentz transformations .. Lorentz transformations. Lorentz transformations. The Poincare group used in physics and mathematics was named after him .. physics. physics. Poincare group. Poincare group
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