deletions | additions       diff --git a/Introduction.tex b/Introduction.tex  index b0517d5..5d738b7 100644  --- a/Introduction.tex  +++ b/Introduction.tex 
...
\section{Introduction}  %The evolution of stars is affected by rotation.   Rotation can affect the life of stars. From birth to death, the stellar plasma is expected to contain a substantial amount of angular momentum.  During the long timescales of stellar evolution the internal distribution of angular momentum is expected to change and impact different observable properties of the star. The mixing surface rotation For example rotational instabilities  and composition, asteroseismic signat   The circulations can mix the star, changing its surface abundances.   Redistribution of angular momentum occurs in the star due to structural changes. For example at the end of the main sequence most stars, after contracting due to the exhaustion of Hydrogen in their cores, ignite Hydrogen in a shell. Above this shell the star begin to expand, while the core continues its contraction.     in the structuThe  total angular momentum is not conserved during the evolution,  as stars are known to lose large amounts of mass (and angular momentum) through their stellar winds. Depending on the coupling between the outer stellar layers and the stellar interiors, angular momentum loss (or distr     The final rotational properties of compact remnants     coor the interThe mixing surface rotation and composition, asteroseismic signat   .  lost through   mixing, s