[3] While Mammadov was first year student, i.e. on 29 November 1957 his father Jabbar bey was exonerated by the decision of Supreme Court of Azerbaijan SSR.
In August of that year Mammadov embarked on working as junior research fellow in Institute of Oriental Studies of ANAS.
Khatira Guliyeva published a monograph called ‘Great Azerbaijani philosopher Mammadov (Baharli)’ with reference to his life and writings.
Through approximately forty years Mammadov carried out explorations, revealed Azerbaijani philosophers’ and thinkers’ (who wrote in Eastern languages) rich legacy published in various countries of the world, as well as preserved as manuscript, worked out their philosophy (theory of existence and knowledge theory), logic, socio-political and ethical views.
Although his doctoral thesis ‘11-13th Centuries Philosophical Thinking in Azerbaijan’, which had been completed in 1974 was published as a book in 1978, he accomplished the defence 16 years later.
Mammadov was a member of expert council on ‘History, theology, philosophy, psychology and pedagogical sciences’ of High Attestation Commission under President of the Republic since 1997.
Along with treatises ‘The Subject of Metaphysics’ and ‘Degrees of Beings’ Bahmanyar's ‘Education’ (Kitab at-tahsil) was fully translated into Azerbaijani.
[4] Mammadov was acquiring the Eastern, especially Azerbaijani philosophers’ works, microfilms of unique manuscripts, printed copies mostly at the expense of his own and sometimes his friends’ allowances to order.
On Mammadov's initiative the Presidium of Azerbaijan Academy of Sciences adopted decision on commemoration of 800th anniversary of Shihab al-Din Suhrawardi, the founder of Illuminationism on April 2, 1991.
While Mammadov, the only researcher of Shihab al-Din Suhrawardi's philosophical legacy translated his numerous treatises into Azerbaijani, merely two of them were issued.
By translating philosopher’s treatise ‘The Temples of Light (Hayakal al-Nur)’ Mammadov published it initially in 1989 and second time in 1999 with his own fund.
Upon Z.Mammadov's initiative the Presidium of Azerbaijan AS and Cabinet of Ministers adopted decision on the commemoration of the 1000th anniversary of Bahmanyār’s birth in 1993.
He delivered speeches regarding the anniversaries of scientific and cultural coryphaeus – Al-Farabi, Avicenna, Nizami Ganjavi, Nasimi, Abbasgulu Bakikhanov, Mirza Fatali Akhundov, Muhammad al-Bukhari and Ahmad Fargani.
Ideological trends, doctrines, vision of their Azerbaijani proponents are analysed in the context of Eastern philosophical thinking.