Search results
Results From The WOW.Com Content Network
Bangladesh, [a] officially the People's Republic of Bangladesh, [b] is a country in South Asia.It is the eighth-most populous country in the world and is among the most densely populated countries with a population of 170 million in an area of 148,460 square kilometres (57,320 sq mi).
Salman " Sal " Amin Khan (born October 11, 1976) is an American educator and the founder of Khan Academy, a free online non-profit educational platform with which he has produced over 6,500 video lessons teaching a wide spectrum of academic subjects, originally focusing on mathematics and science. [ 1] He is also the founder of Khan Lab School ...
Set theory is the branch of mathematical logic that studies sets, which can be informally described as collections of objects. Although objects of any kind can be collected into a set, set theory — as a branch of mathematics — is mostly concerned with those that are relevant to mathematics as a whole. The modern study of set theory was ...
2016 [ 4] 1,000,000 subscribers. 2018 [ 4] [ 5] Last updated: May 6, 2024. 3Blue1Brown is a math YouTube channel created and run by Grant Sanderson. [ 6] The channel focuses on teaching higher mathematics from a visual perspective, and on the process of discovery and inquiry-based learning in mathematics, which Sanderson calls "inventing math".
Khan Academy. Khan Academy is an American non-profit [ 3] educational organization created in 2006 by Sal Khan. [ 1] Its goal is to create a set of online tools that help educate students. [ 4] The organization produces short video lessons. [ 5]
In mathematics, a conformal map is a function that locally preserves angles, but not necessarily lengths. More formally, let and be open subsets of . A function is called conformal (or angle-preserving) at a point if it preserves angles between directed curves through , as well as preserving orientation. Conformal maps preserve both angles and ...
Many mathematical problems have been stated but not yet solved. These problems come from many areas of mathematics, such as theoretical physics, computer science, algebra, analysis, combinatorics, algebraic, differential, discrete and Euclidean geometries, graph theory, group theory, model theory, number theory, set theory, Ramsey theory, dynamical systems, and partial differential equations.
One of the main goals of Hilbert's program was a finitistic proof of the consistency of the axioms of arithmetic: that is his second problem. [ a ] However, Gödel's second incompleteness theorem gives a precise sense in which such a finitistic proof of the consistency of arithmetic is provably impossible.