/- Copyright 2025 The Formal Conjectures Authors. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at https://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. -/ import FormalConjecturesUtil

Open questions on irrationality of numbers

Reference: Wikipedia

open Real local notation "e" => exp 1 -- See also corresponding transcendence conjectures -- in `FormalConjectures.Wikipedia.SchanuelsConjecture` namespace Irrational

Are $e$ and $\pi$ algebraically independent?

@[category research open, AMS 33] theorem declaration uses 'sorry'algebraicIndependent_e_pi : answer(sorry) AlgebraicIndependent ![e, π] := True AlgebraicIndependent ![e, π] All goals completed! 🐙

Is $e + \pi$ irrational?

@[category research open, AMS 33] theorem declaration uses 'sorry'irrational_e_plus_pi : answer(sorry) Irrational (e + π) := True Irrational (e + π) All goals completed! 🐙

Is $e \pi$ irrational?

@[category research open, AMS 33] theorem declaration uses 'sorry'irrational_e_times_pi : answer(sorry) Irrational (e * π) := True Irrational (e * π) All goals completed! 🐙

Is $e ^ e$ irrational?

@[category research open, AMS 33] theorem declaration uses 'sorry'irrational_e_to_e : answer(sorry) Irrational (e ^ e) := True Irrational (e ^ e) All goals completed! 🐙

Is $\pi ^ e$ irrational?

@[category research open, AMS 33] theorem declaration uses 'sorry'irrational_pi_to_e : answer(sorry) Irrational (π ^ e) := True Irrational (π ^ e) All goals completed! 🐙

Is $\pi ^ \pi$ irrational?

@[category research open, AMS 33] theorem declaration uses 'sorry'irrational_pi_to_pi : answer(sorry) Irrational (π ^ π) := True Irrational (π ^ π) All goals completed! 🐙

Is $\ln(\pi)$ irrational?

@[category research open, AMS 33] theorem declaration uses 'sorry'irrational_ln_pi : answer(sorry) Irrational (log π) := True Irrational (log π) All goals completed! 🐙

Is the Euler-Mascheroni constant $\gamma$ irrational?

@[category research open, AMS 33] theorem declaration uses 'sorry'irrational_eulerMascheroniConstant : answer(sorry) Irrational eulerMascheroniConstant := True Irrational eulerMascheroniConstant All goals completed! 🐙

Is the Catalan constant $$G = \sum_{n=0}^∞ (-1)^n / (2n + 1)^2 \approx 0.91596$$ irrational?

@[category research open, AMS 11 33] theorem declaration uses 'sorry'irrational_catalanConstant : answer(sorry) Irrational catalanConstant := True Irrational catalanConstant All goals completed! 🐙 end Irrational