"To those who do not know mathematics, it is difficult to get across a real feeling as to the beauty, the deepest beauty, of nature ... If you want to learn about nature, to appreciate nature, it is necessary to understand the language that she speaks in. "
	R. Feynman

Adrian Vajiac Associate Professor of Mathematics Chapman University Schmid College of Science One University Drive Orange, CA 92866 Phone: (714) 997-6898 Fax: (714) 628-7340

Teaching - Spring 2013: Math 110: Single Variable Calculus I Syllabus MyMathLab Student Registration Instructions Review for the Midterm Exam Guided Projects 9-10 Guided Projects 11-14 Guided Projects 15-17 Guided Projects 18-20 Review for the Final Exam Hon 208: Universal Geometry Math 451: Complex Analysis

Research Interests:

• Complex and Hypercomplex Analysis
  Complex Analysis is a classical branch of mathematics, having its roots in late 18th and early 19th centuries, which investigates functions of one and several complex variables. It has applications in many branches of mathematics, including Number Theory and Applied Mathematics, as well as in physics, including Hydrodynamics, Thermodynamics, Electrical Engineering, and Quantum Physics. Clifford Analysis is the study of Dirac and Dirac type operators in Analysis and Geometry, together with their applications. In 3 and 4 dimensions Clifford Analysis is referred to as Quaternionic Analysis. Furthermore, methods and tools of Clifford Analysis are extended to the field of Hypercomplex Analysis.
  Publications:
  1. "Complex Laplacian and Derivatives of Bicomplex Functions", M.E. Luna-Elizarraras, M. Shapiro, D.C. Struppa, A. Vajiac, Complex Anal. Oper. Theory, DOI 10.1007/s11785-013-0284-8, Springer Basel, March (2013).
  2. "Holomorphy in Multicomplex Spaces", D.C. Struppa, A. Vajiac, M.B. Vajiac, Spectral Theory, Mathematical System Theory, Evolution Equations, Differential and Difference Equations, Volume 221, ISBN 9783034802970, p. 617-634, Springer (2012).
  3. "Bicomplex Numbers and their Elementary Functions", M.E. Luna-Elizarraras, M. Shapiro, D.C. Struppa, A. Vajiac, CUBO: A Mathematical Journal, vol.14, no.2, p.61-80, ISSN 0719-0646 (2012).
  4. "Hyperbolic Numbers and their Functions", M. Shapiro, D.C Struppa, A. Vajiac, M.B. Vajiac, Analele Universitatii Oradea, Fasc. Matematica, Tom XIX, Issue No. 1, p. 265-283, (2012).
  5. "The Cauchy-Kowalewski product for bicomplex holomorphic functions", H. De Bie, D.C. Struppa, A. Vajiac, M.B. Vajiac, Mathematische Nachrichten, Volume 285, Issue 10, p. 1230-1242, July (2012).
  6. "Multicomplex hyperfunctions", A. Vajiac, M.B. Vajiac, Complex Variables and Elliptic Equations, Volume 57, Issue 7-8, p. 751-762, (2012).
  7. "Bicomplex hyperfunctions", F. Colombo, I. Sabadini, D.C. Struppa, A. Vajiac, M.B. Vajiac, Ann. Mat. Pura Appl. (4) 190, no.2, pg. 247-261, (2011).
  8. "Remarks on Holomorphicity in three settings: Complex, Quaternionic, and Bicomplex", D.C. Struppa, A. Vajiac, M.B. Vajiac, Hypercomplex Analysis and Applications, Trends in Mathematics, pg. 261-274, Birkauser Verlag Basel/Switzerland (2011).
• Algebraic Computational Methods in Geometric and Physics PDEs
  In recent years, techniques from computational algebra have become important to render effective general results in the theory of Partial Differential Equations. My research is following the work of D.C. Struppa, I. Sabadini, F. Colombo, F. Sommen, etc., authors which have shown how these tools can be used to discover and identify important properties of several systems of interest, such as the Cauchy-Fueter, the Mosil-Theodorescu, the Maxwell, the Proca system, as well as the systems which naturally arise from the work of the Belgian school of Brackx, Delanghe and Sommen.
  Publications:
  1. "Singularities of functions of one and several bicomplex variables", F. Colombo, I. Sabadini, D.C. Struppa, A. Vajiac, M.B. Vajiac, Arkiv for Matematik, Volume 49, Issue 2 (2011), pg. 277-294.
  2. "Hartogs Phenomena and Antisyzygies for Systems of Differential Equations", A. Damiano, D.C. Struppa, A. Vajiac, M. Vajiac, Journal of Geometric Analysis, Volume 19, Issue 2, p. 288-300 (2009).
  3. "Computational Algebra Techniques in Electromagnetism", F. Colombo, I. Sabadini, D.C. Struppa, A. Vajiac, M.B. Vajiac, Journal of Mathematical Sciences: Advances and Applications, Volume 3, No. 1, p. 77-88 (2009).
• Equivariant Localization Techniques in Topological Quantum Field Theory
  Topological Quantum Field Theories (TQFT) emerged in the late 1980s as part of the renewed relationship between differential geometry/topology and physics. In the 1990s, developments in TQFT gave unexpected results in differential topology and symplectic and algebraic geometry. One striking feature of physicists' approach to TQFT is the use of mathematically non-rigorous Feynman path integrals to produce new topological invariants of manifolds, which appear as the physical observables of the TQFT. My work makes use of the Mathai--Quillen formalism in the context of Equivariant Cohomology, in order to study properties of TQFTs (e.g. Donaldson--Witten and Seiberg--Witten generating functions) and relations between them.
  Publications:
  1. "Equivariant Localization Techniques in Topological Quantum Field Theories", International Journal of Geometric Methods in Modern Physics (IJGMMP), Volume: 7, Issue: 2, p. 247-266, (2010).
  2. "A derivation of Witten's conjecture relating Donaldson and Seiberg-Witten invariants", arXiv:hep-th/0003214.
  3. "Localization techniques in topological quantum field theories", Ph.D. Thesis, Boston University (1999).
• Foundations of Geometry
  I am interested mostly in the Hilbertian axiomatic approach to Geometry. Far from being an expert in this field, I am studying especially the constructions of Euclidean and non-Euclidean geometries using purely geometric axioms, without using numbers, distances, and/or continuity properties.
  Publications:
  1. "An Exploration of Hilbert's Neutral Geometry", W.G. Boskoff, B. Suceava, A. Vajiac), Gazeta Matematica Seria A", Volume XXVI, No. 1, p. 1-22 (2008).
  2. "The power of a point for some real algebraic curves", B. Suceava, A. Vajiac, M.B. Vajiac, The Mathematical Gazette, London, March 2008, p. 22-28 (2008).
  3. "Discovering Geometry: An Axiomatic Approach", W.G. Boskoff, A. Vajiac, Matrix Rom, Bucharest, 134 pp., ISBN: 978-973-755-668-4 (2011)
• Mathematics and Physics Education
  My interests lie in methodological aspects of introducing research ideas and modern results in Mathematics and Physics to undergraduate students and future teachers. My goal is to raise scientific awareness and interest among college and university students, and to prepare them for active research.
  Publications:
  1. "A survey of the history of the ideas which lead to the Kaluza-Klein theory", B. Suceava, A. Vajiac, Curierul de Fizica, no. 58, p. 12-14, (in Romanian), April (2007).
  2. "Areas and the Fundamental Theorem of Calculus", A. Vajiac, B. Vajiac, International Journal of Mathematical Education in Science and Technology, Volume 39, Issue 8 p. 1023-1036 (2008).