Trishula and Ouroboros. Trishula is Shiva's trident. It represents inertia, momentum, and the balance between them. Ouroboros is the snake biting its own tail on Shiva's neck. It's a reference to imortality.
The trishula commonly used as a Hindu-Buddhist religious symbol is wielded by the Hindu God Shiva and is said to have been used to sever the original head of Ganesha. Durga also holds trishula, as one of her many weapons. The three points have various meanings and significance, and, common to Hindu religion, have many stories behind them. They are commonly said to represent various trinities—creation, maintenance and destruction, past, present and future, the three guna.