Memories with Solomon Marcus

Abstract

The present paper is dedicated to Solomon Marcus. Even
from the high-school, I was interested in the work of Solomon Marcus
in Mathematical Linguistics. Later, I had the opportunity to meet him
personally, and to discuss with him about many topics. He was a polymath.
At the Institute of Mathematics, we wrote a paper together. I also
refereed an editorial paper about his work in 2021. His influence on my
work extends to the present days. The current paper brings hot topics
from our discussions to the interested reader: some topology conjectures,
results about Boolean algebras and a self-dual theorem in geometry.