**Books:**

- A. H. Parvardi and M. Billal.
*Topics in Number Theory, An Olympiad Oriented**Approach*. 2016.*(In Preparation)*

**Papers:**

- Nasehpour, P. and Parvardi, A.H., Dec. 2017.
*Finitely additive, modular, and probability functions on pre-Semirings*. Communications in Algebra,*46*(7), pp.2968-2989. - A. H. Parvardi.
*Lifting The Exponent Lemma*. Apr. 2011. Selected as a featured article of the Art of Problem Solving website [AoPS] - Nasehpour, P. and Parvardi, A.H. and Ghobadipasha, N.
*Superparticular Decompositions and Musical Graphs (Ongoing):*In this study, Dr. Peyman Nasehpour, Nadia Ghobadipasha, and I examine superparticular ratios with number theoretic aspects and then we use those number theoretic results to analyze some of the so-called musical graphs. To be completed soon.

**Problem Sets:**

- A. H. Parvardi.
*Number Theory Problems in Mathematical Competitions (2015 – 2016)*. May 2018. [Demo][AoPS]

- A. H. Parvardi.
*LTE Challenge Problems*. December 2017 [AoPS] - A. H. Parvardi, B. Engwall.
*1220 Number Theory Problems (The J29 Project)*. August 2012. [AoPS] - A. H. Parvardi.
*100 Number Theory Problems (With Solutions)*. June 2011 [AoPS] - A. H. Parvardi.
*100 Combinatorics Problems (With Solutions)*. June 2011 [AoPS] - A. H. Parvardi.
*100 Functional Equations Problems (With Solutions)*. June 2011 [AoPS] - A. H. Parvardi.
*100 Inequalities Problems (With Solutions)*. June 2011 [AoPS] - A. H. Parvardi.
*150 Geometry Problems (With Solutions)*. June 2011 [AoPS] - A. H. Parvardi.
*50 Trigonometry Problems*. February 2011 [AoPS]

**Seminars:**

- MathSciNet
- March 8, 2018:
*On the Equation $A!B!=C!$*[PDF] - April 19, 2018:
*The Multiple Dirichlet Product and the Multiple Dirichlet Series (Multiple Zeta Functions)*[PDF]*– help-sheet*[PDF]

- March 8, 2018:

**Projects:**

**Moderating AoPS Fora***(2010 – Present)***:**- I was a global moderator at AoPS (2010 – 2014). I am now in charge of the olympiad community moderation at AoPS, starting 2010.

**Resource Manager at AoPS***(2010 – 2014)***:**- I was the chief manager of AoPS Olympiad Resources. On 2012, I collected problems of almost all mathematical Olympiad competitions around the world from 1959 to 2012 and published them here.

**Translating and Publishing Iran Olympiad Problems***(January 2011)***:**- I translated and posted problems of Iranian Mathematical Olympiad from 1983 to 2010 to AoPS fora. The problems can be found here.

**Manager of ISL–ILL Project***(September 2010)***:**- I posted (and partially solved) problems of Short-List and Long-List of
*International Mathemetical Olympiad*(ISL and ILL, respectively) along with my friends Orlando Doehring, Andrew Kirk, Goutham Richlair, and Sameer Seraj. The details of this huge project (containing over 1000 problems) might be found here.

- I posted (and partially solved) problems of Short-List and Long-List of