1. Edgar T. Treviño E. (2022). Many Proofs that 1+2+⋯+n=n(n+1)2. http://campus.lakeforest.edu/trevino/ManyProofsSumConsecutives.pdf
2. An Entropy Proof of the Arithmetic Mean–Geometric Mean Inequality
3. A Discrete Look at 1 + 2 +…+ n
4. Levi, M. (2012). The Mathematical Mechanic: Using Physical Reasoning to Solve Problems. Princeton, NJ: Princeton Univ. Press.
5. A Communicating-Vessels Proof of Hölder’s Inequality