The "article of president" refers to Articles 52-62 of the Indian Constitution, which outline the office of the President of India. These articles cover the President's position as head of state, the vesting of executive power (Article 53), the election process, qualifications, term of office, impeachment, and oath of office. Key articles include Article 52, which states there shall be a President of India, and Article 53, which vests executive power in the President.