Is the first divorce considered void if the divorced woman marries another man, then returns to her first husband?

The husband must offer sincere repentance for the grave sins he commits. Every capable person should advise him, for the Prophet, peace and blessings be upon him, said: "Religion is advice." If he repents, then the matter is clear. If he persists, then his departure is not to be regretted. Regarding the invalidation of divorce after a woman marries a second man, and if it was less than three divorces, the majority opinion is that it is not invalidated.