Science of Logic - Wikipedia
Science of Logic (SL ; German: Wissenschaft der Logik, WdL ), first published between 1812 and 1816, is the work in which Georg Wilhelm Friedrich Hegel outlined his vision of logic. Hegel's logic is a system of dialectics , i.e., a dialectical metaphysics: it is a development of the principle that thought and being constitute a single and active unity.
https://en.wikipedia.org/wiki/Science_of_Logic