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Source– This post is based on the article “Meet the Langlands Program, the world’s biggest maths project | Explained” published in “The Hindu” on November 21, 2023.
Why in the News?
Langlands Program provides a beautifully intricate set of connections between various areas of mathematics, pointing the way toward novel solutions for old problems in mathematics.
What is the Langlands Program?
| Aspect | Details |
| What is it? | 1. It is the world’s biggest maths project and can be likened to building bridges across mathematical cultures with different objects and languages. 2. It is named after Robert Langlands, a mathematician at the Institute for Advanced Study in Princeton. 3. In 2018, he was awarded the Abel Prize for “his visionary program connecting representation theory to number theory” |
| Objective | To find connections between two far-flung areas of mathematics – number theory and harmonic analysis. – It seeks to do this by connecting every Galois group with automorphic functions, allowing mathematicians to investigate polynomial equations using tools from calculus. |
| Initiation | 1967 |
| Significance of the program | 1. Solving old Maths problems– In 1994, Andrew Wiles and Richard Taylor applied Langlands’ conjectures to prove Fermat’s last theorem. 2. Creating new functions– It can help mathematicians create new automorphic functions from preexisting ones. Such efforts could be crucial to prove the Ramanujan conjectures (speculations), many of which remain unsolved. 3. Can evolve into new fields of mathematics– For example, Geometric Langlands. It investigates connections between algebraic geometry and representation theory. 4. Multidisciplinary significance– Mathematicians have suggested connections between Geometric Langlands and physics, particularly for studying electromagnetic waves. |
Note-
1. Number theory: It is the arithmetic study of numbers and the relationships between them. For example, the pythagoras theorem.
2. Harmonic analysis: It is interested in the study of periodic phenomena. Unlike number theorists, who deal with discrete arithmetic’s (like integers), harmonic analysts deal with mathematical objects more continuous in nature (like waves).
3. Galois group: In 1832, mathematician Évariste Galois concluded that it is impossible to have a general formula to find the precise roots of polynomial equations and instead suggested focusing on symmetries between roots as an alternate route. Galois group is a collection of such symmetries of the roots of a polynomial equation.
4. Automorphic functions: Functions that turn back into themselves when the variables are changed by some process are called automorphic functions. The sine function is a simple example.
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