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Search options not deleted user 33664
7 votes
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Algorithmic decidability of equality in the ring of periods

There is no known algorithm for that, and it is unknown if such an algorithm exists.
Oksana Gimmel's user avatar
10 votes
2 answers
455 views

Is equivalence of functions built from nested exponentiations a decidable problem?

Let $\mathcal{E}$ be the minimal set of symbolic expressions (without any predefined meaning) such that The symbol $x$ is in $\mathcal{E}$, and If expressions $P,Q\in\mathcal{E}$, then the superscr …
Oksana Gimmel's user avatar