Having experienced your posting for a while now, I see you don't appreciate ancient Greek philosophy the same way. I'm unsure whether it's because of you or the education system that has molded you; I have never attended a Greek university, and I don't ever plan to, so I don't know their discourse.
Neither have I. I studied in the university of Essex, in 3rd world England.
As for your claims:
a) Your first claim: 'modern philosophy is not philosophy' (as if I argued along those lines) :
-The argument was on whether Marx is part of philosophy or not. No one here (and surely not myself) claimed that modern philosophy is non-existent. On my part (along with other posters in the thread) i noted that Marx is not part of modern philosophy, cause philosophy is very distinct from economical theory or sociology. I even mentioned Heidegger, who surely wrote a bit later than Marx.
b) Your second claim: 'I am yet to encounter an ancient Greek philosophical paper which correctly describes the world.' :
-"Correctly describing the world" is not a subject of modern philosophy either. Nor was it of ancient philosophy. The topic would have been unpractically vast, not to mention horribly ambiguous. While a number of ancient Greek philosophical works do feature math of their time as part of the phenomenon of human thought, they do not form a hybrid of physics and philosophy. The latter is a modern phenomenon, practised by non-philosophers. A good example of such a problematic hybrid which does not help their actual scientific order and background, while fails to incorporate any serious philosophical thought either, would be biologico-philosophical treatises with a helping of anti-religious focal points

Math, on the other hand, is not of the same order as physics or biology etc, since it is by itself a system of thought, and as such a direct expression of the human mind. It is not dependent on external objects (despite being crucially influenced by the facts of our senses, such as our ability to differentiate meaningfully between numeral ammounts). In particular the issue of the relation between the (human) thinker and the world of thought, was examined in the classical era by Anaxagoras, Protagoras, Anaximander, Plato, Socrates and a number of other thinkers, and as i mentioned in a previous post in this thread it presented itself as of the core issues of classical philosophy.