A conjecture by Erdős and Lemke in elementary number theory goes as follows: If d is a divisor of n and we have d divisors of n, say a1,...,ad, not necessarily distinct, can we always find a subsequence among them such ...

The bacterium Francisella tularensis is a versatile bacterium. It is able to infect multiple hosts through multiple transmission routes, including the bite of an arthropod, ingestion, inhalation, and contact through the ...