Journal of Philosophical Logic, Vol. 44, No. 3 (June 2015), pp. 237-258 (22 pages) Harold Hodes in [1] introduces an extension of first-order modal logic featuring a backtracking operator, and ...

What seem to be Kurt Gödel's first notes on logic, an exercise notebook of 84 pages, contains formal proofs in higher-order arithmetic and set theory. The choice of these topics is clearly suggested ...

Math Riddles are so challenging, but that makes them worthwhile to solve. Math riddles are logical problems that require strong analytical abilities, high IQ, knowledge of math concepts, and good ...

Logic: Next number formed is (number x (number – 2)) – number ...

Chandan Singh Gughtyal has been teaching Maths in boarding schools in India for about 28 years. He has experience of working as an assistant housemaster, housemaster, resident dorm parent, and dorm ...