The Trinomial of Procedural Law
The trinomial of procedural law, is a concept raised by Calamandrei, in which he synthesizes ─rightly─ the fundamental notions of procedural law, and which are common to any legal system.
Within it are (a) jurisdiction, which is the most essential requirement for a judicial process to exist; (b) the action, which constitutes the procedural tool of the attorney to exercise and claim their rights unto said jurisdiction; and (c) the process, properly speaking.
Calamandrei would do it as a way of conceptualizing the essential notions to approach the study of civil procedural law, in his: Istituzioni di diritto processuale civile (institutions of civil procedural law).
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