"Babeș-Bolyai" University,

Faculty of Mathematics and Computer Science,

Cluj Napoca, Romania

email: dandrica@math.ubbcluj.ro , dorinandrica@yahoo.com

Articles and papers in Elementary Mathematics

1. D.Andrica, On the sequence (p_n+1 - p_n)_n>=1 (Romanian),G.M., nr. 7(1978), 277-279 MR80a: 10007; Zbl:391.10009

2. D.Andrica, T.Andreescu, On class of identities (Romanian),G.M. nr.11 (1978), 472-475 MR80j: 05011

3. D.Andrica, T.Andreescu, Solving the diophantine equation ax²-by²=1 (Romanian), G.M. nr.4(1980), 146-148 MR81k: 10025; Zbl: 486.10015

4. D.Andrica, T.Andreescu, The existence of a fundamental solution to the equation ax²-by²=1 (Roamnian), G.M. nr.2 (1981), 52-54 MR83i: 10025; Zbl: 486.10015

5. D.Andrica, T.Andreescu, Conditions for which the integers an+b si cn+d are simultaneously perfect squares (Romanian), G.M. nr.7 (1983), 265-266 MR850: 11026; Zbl: 522.10008

6. D.Andrica, On a large class of derivatives (Romanian), G.M. perfectionare metodica si metodologica in matematica si informatica nr.4, 1986, 169-176 Zbl: 624.26004

7. D.Andrica, L.Toth, The order of convergence of some sequences of the type "1+1/2+...+1/n-ln n" (Romanian), Astra Matematica 1 (1990), 3, 3-7 Zbl: 755.40001

8. D.Andrica, On a combinatorial sum (Romanian), G.M., nr.5 (1989), 158 Zbl: 704.05004

9. D.Andrica, L.Toth, The asymptotic expansion of the sequence (1+1/n)ⁿ, Selected papers from "Didactica matematicii" volumes 1984-1992, pp. 1-10 (M.Balasz,Ed.), "Babes-Bolyai" University Research Seminars, Cluj-Napoca, 1992

10.D.Andrica, D.Valcan, Euler's formula for polyhedra.Applications.Generalizations, Selected papers from "Didactica matematicii" volumes 1984-1992, pp. 11-29 (M.Balasz,Ed.), "Babes-Bolyai" University Research Seminars, Cluj-Napoca, 1992