Men do not take an oath upon assuming the papacy, all they need do is verbally accept their valid election by the College of Cardinals, and they are pope from that instant on.
The pope is the head of the Catholic Church. There is only one Catholic Church and it is not a sect. To be a Catholic Church, a church must be in union with the pope. If they are not in union with the pope, they are not Catholic.
There is no such thing as "the pope of Algeria." The pope is the leader of the Roman Catholic Church. The current pope is Pope Francis. The president of Algeria is Abdelaziz Bouteflika.
If by Roman Church you are referring to the Latin rite of the Catholic Church, the answer is yes, and so much more. There are a number of other Catholic rites in union with the pope, also. Technically, the pope is the head of the entire Christian Church but is only recognized by the Catholics.
As of March 2013, Pope Francis is the leader of the Catholic Church.
Currently as of 3/19/2013 there has only been one Pope Francis and that the current Pope of the Roman Catholic Church.
First of all, there is no "Roman" Catholic Church. "Roman" Catholic is a slur term first popularized in England after the protestant revolt. The leader of the Catholic Church is God, specifically His Son, Our Blessed Lord, Jesus Christ, who sent the Holy Spirit to guide the Church until the end of time. His appointed Vicar on earth is the Pope, the first of which was St. Peter (see Matthew 16:17-19) and the current successor of whom, is Francis.
Yes, the new Pope has been chosen, the new Pope of the Roman Catholic Church is Pope Francis. He was elected on March 13,2013.
Pope Francis is a Catholic priest and not married.
The Roman Catholic Church
As of March 2013 the pope of the worldwide Catholic Church is Pope Francis.
Pope Francis is the supreme leader of the Catholic Church.
Currently (March 2013) that would be Pope Francis.