@article{201811.0301, doi = {10.20944/preprints201811.0301.v8}, url = {https://doi.org/10.20944/preprints201811.0301.v8}, year = 2019, month = {June}, publisher = {Preprints}, author = {Apoloniusz Tyszka}, title = {On Sets $X \subseteq {\mathbb N}$ for Which an Explicitly Known Algorithm Returns an Integer $n$ Such That $\max(X)