Do the father and his brothers inherit from the estate of their grandmother, who passed away after their father (her son), and they only have paternal aunts?

He who dies before his mother does not inherit from her, because the deceased neither inherits nor owns. As for the children who are alive at the time of their mother's death, they inherit from her. If one of them dies after the mother's death and before receiving his share, then his share transfers to his heirs. Inheritance matters must be referred to the Sharia courts or discussed orally with scholars to ensure that the heirs, bequests, debts, and other rights are fully accounted for, as these precede the heirs' right to the money.