Namaste.
I have a question regarding the different classifications used in Kashmir Shaivism.
I understand that there are:
The seven Pramātṛs (Śiva, Mantramaheśvara, Mantreśvara, Mantra, Vijñānākala, Pralayākala, Sakala),
The Aham–Idam formulations (Aham, Aham–Idam, Idam–Aham, etc.),
The five Śuddha Tattvas (Śiva, Śakti, Sadāśiva, Īśvara, Śuddhavidyā).
Are these three independent classifications, or is there a traditional correspondence between them? If there is a correspondence, could you explain how each Pramātṛ relates to the Aham–Idam expressions and to the Śuddha Tattvas?
Also, are there any primary texts—such as the Tantrāloka, Īśvara-pratyabhijñā, Pratyabhijñāhṛdayam, or other authoritative works—that explicitly discuss or correlate these classifications? Or is the comparison mainly a pedagogical presentation by later teachers?
I believe these classifications are certainly related. I can recommend a concise text that does discuss these relations very clearly. Specific Principles of Kashmir Shaivism by B.N. Pandit. In particular, the chapter called Seven Levels of Being. ISBN 978-81-215-0729-5.