1. REPRESENTATION THEOREMS AND ALMOST UNIMODAL SEQUENCES. Authors: DORIN ANDRICA, DANIEL VĂCĂREŢU.2. THE HYPERBOLIC DESARGUES THEOREM IN THE POINCAR`E MODEL OF HYPERBOLIC GEOMETRY. Authors: DORIN ANDRICA.3. THE MINIMUM NUMBER OF CRITICAL POINTS OF CIRCULAR MORSE FUNCTIONS. Authors: DORIN ANDRICA, CORNEL PINTEA.4. CIRCULAR MAPPINGS WITH MINIMAL CRITICAL SETS. Authors: DORIN ANDRICA, CORNEL PINTEA.5. RODRIGUES FORMULA FOR THE CAYLEY TRANSFORM OF GROUPS SO(n) AND SE(n). Authors: DORIN ANDRICA.6. UNIQUELY CLEAN 2 X 2 INVERTIBLE INTEGRAL MATRICES. Authors: GRIGORE CĂLUGĂREANU, DORIN ANDRICA.7. AN ELLIPTIC DIOPHANTINE EQUATION FROM THE STUDY OF PARTITIONS. Authors: GEORGE C. ŢURCAŞ, DORIN ANDRICA.8. BOOK REVIEW: VIJAY GUPTA AND MICHAEL TH. RASSIAS, “COMPUTATION AND APPROXIMATION”, SPRINGER CHAM 2021, SER.: SPRINGER BRIEFS IN MATHEMATICS DOI: HTTPS://DOI.ORG/10.1007/978-3-030-85563-5. Authors: DORIN ANDRICA.