Excluding Oceanus since Hades shares this river with Earth, Hades has 5 rivers.
Actually, all the Rivers of the Underworld are identified with rivers of the real world.
Tetractys has 5 points.
No, the Tetractys is 1+2+3+4=10 points, hence it is also known as the Dekad. And while its symbolism in Pythagoreanism was manifold, “the Rivers of the Underworld” was not among them.
Advance its complexity, we have the pentachoron. Turning it into a net forms the pentagram.
No, the pentachoron or 5-cell is the four-dimensional equivalent of the tetrahedron, as the tesseract is towards the cube, and the pentagram-in-a-pentagon is the orthogonal projection, not the net, which would be the pattern you think looks similar to the Tree of Life. And for the latter two things, you could just have read that diagram’s legend.
What is most significant is the net’s consistency with Kabbalah’s tree of life. The parallel cannot be mistaken.
They are entirely superficial.
By subversion of religion, sub-lunar forces (daemons) deceive souls so that they never reunite with the gods.
Actually, daimon was a neutral term for lesser deities before Christianity, you ignoramus.
This purpose is also fulfilled through the Abrahamic faiths derived from Kabbalah’s religion.
Actually, Kaballah began in the 13th Century AD, long after all major Abrahamic religions had been established.
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I suspected he stumbled upon that image (and presumably the terms “pentachoron” and “tetractys”, which he did not know, but found that the latter had mystical associations in ancient greek), came to the conclusion that something must be sinister about it, and then desperately searched for some vaguely fitting group of five in Greek mythology from whence he would spin his conspiracy theory.
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Conclusion:
You fail geometry and religious study - including in regards to your own, presumably adopted, religion - forever.