Kashmir Shaivism is a group of nondualist Tantric Shaiva traditions from Kashmir that originated in the second half of the first millennium. The term is most often used to refer to the Anuttaratrikakula (the school of the highest "Trika" or Triad) philosophy also known as the Pratyabhijna ("Recognition") system expounded by Abhinavagupta (c. 975-1025 C.E.), but also includes the earlier schools of Kapalika and its subschools the Kaula and Krama schools. All these traditions accept the Shaiva Tantras (also called Agamas, c. 9th century CE) as their main scriptures.