In mathematics, the Poincaré conjecture is a theorem about the characterization of the 3-sphere, which is the hypersphere that bounds the unit ball in four-dimensional space.

The conjecture states:
Every simply connected, closed 3-manifold is homeomorphic to the 3-sphere.

An equivalent form of the conjecture involves a coarser form of equivalence than homeomorphism called homotopy equivalence: if a 3-manifold is homotopy equivalent to the 3-sphere, then it is necessarily homeomorphic to it.

Originally conjectured by Henri Poincaré, the theorem concerns a space that locally looks like ordinary three-dimensional space but is connected, finite in size, and lacks any boundary (a closed 3-manifold). The Poincaré conjecture claims that if such a space has the additional property that each loop in the space can be continuously tightened to a point, then it is necessarily a three-dimensional sphere. The analogous conjectures for all higher dimensions were proved before a proof of the original conjecture was found.

Zbigniew Frajnt -  Poincaré Conjecture (Original Mix) #2020

I produce music from 2012, Different species, I do not limit myself .Mainly works with the genre of Trance and similar.

Trance is a genre of electronic music that emerged from the British new-age music scene and the early 1990s German techno and hardcore scenes. At the same time trance music was developing in Europe, the genre was also gathering a following in the Indian state of Goa.

Trance music is characterized by a tempo lying between 110–150 bpm (BPM), repeating melodic phrases, and a musical form that distinctly builds tension and elements throughout a track often culminating in 1 to 2 "peaks" or "drops". Although trance is a genre of its own, it liberally incorporates influences from other musical styles such as techno, house, pop,  chill-out, classical music, tech house, ambient, and film music.