References

Ciesielski, Krzysztof. 1997. Set Theory for the Working Mathematician. London Mathematical Society Student Texts 39. Cambridge University Press.
Ferreiros, Jose. n.d. “The Crisis in the Foundations of Mathematics.” In The Princeton Companion to Mathematics. \url{https://personal.us.es/josef/pcmCrisis.pdf}.
Wikipedia. 2022a. Foundations of mathematics — Wikipedia, the Free Encyclopedia. Http://en.wikipedia.org/w/index.php?title=Foundations%20of%20mathematics&oldid=1097188669.
Wikipedia. 2022b. Mathematics — Wikipedia, the Free Encyclopedia. Http://en.wikipedia.org/w/index.php?title=Mathematics&oldid=1103972043.