An elementary survey of mathematical cosmology is presented. We cover certain key ideas
and developments in a qualitative way, from the time of the Einstein static universe in 1917 …

In this work, we explore cosmological sudden singularities arising in the dynamically
equivalent scalar-tensor representation of generalized hybrid metric-Palatini gravity. Using a …

We continue our overview of mathematical cosmology with a survey of the third and fourth
periods of the development of the subject. The first Part includes the first two periods and is …

In this work we analyze the possibility of sudden cosmological singularities, also known as
type-II singularities, in the background of a Friedmann-Lemaître-Robertson-Walker geometry …

Due to the accelerated expansion of the universe, the possibilities for the formation of
singularities has changed from the classical Big Bang and Big Crunch singularities to …

We construct a generic asymptotic solution for modified gravity near a sudden singularity.
This solution contains a fluid source with no equation of state and is function-counting …