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Questions tagged [string-theory]

For questions about string theory, which is a research framework in theoretical physics and mathematical physics that attempts to unify quantum theories and general relativity.

String theory is a research framework in theoretical physics and mathematical physics that attempts to unify quantum theories and general relativity. It is a contender for a theory of everything, a self-contained mathematical model that describes all fundamental forces and forms of matter. String theory posits that the elementary particles (e.g. electrons and quarks) within an atom are not $0$-dimensional objects, but rather $1$-dimensional oscillating lines ("strings").

94 questions
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Confusing definitions of Modular Group and Teichmüller space

Notations 1.$\Sigma_g$ is the Reimann surface with genus $g$ 2.$M_g$ is the space of all metrics 3.Diff($\Sigma_g$) is the diffeomorphism on $\Sigma_g$ 4.$\text{Diff}_0(\Sigma)$ is the connected component of the identity of…
Steven Chang
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Levenshtein Distance vs Damerau Levenstein vs Optimal String Alignment Distance

Could anyone explain the differences between Levenshtein Distance vs Damerau Levenstein vs Optimal String Alignment Distance? And the Math behind calculating distance between the strings
Pluviophile
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Consider the continuous map $ f: \Sigma_{2}^{+} \rightarrow \Sigma_{2}^{+} $ , which is shift map also by

Define $ \Sigma_{2}^{+}=\{x=\{x_n\}: x_n=0 \ or \ 1 \} $ is infinite string of $ \ 0 's \ \ and \ \ 1 's $. Consider the continuous map $ f: \Sigma_{2}^{+} \rightarrow \Sigma_{2}^{+} $ , which is shift map also by $…
MAS
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