Editing 1990 in science (section)

==Mathematics==
* [[Alan E. Gelfand]] and [[Adrian Smith (statistician)|Adrian Smith]] publish a paper drawing attention to the significance of the [[Gibbs sampler]] technique for Bayesian [[numerical integration]] problems.<ref>{{Cite journal|last1=Gelfand|first1=A. E.|last2=Smith|first2=A. F. M.|title=Sampling-Based Approaches to Calculating Marginal Densities|journal=Journal of the American Statistical Association|volume=85|issue=410|pages=398–409|doi=10.2307/2289776|year=1990|jstor=2289776}}</ref>
* [[Victor Kolyvagin]] introduces [[Euler system]]s.<ref>{{citation|last=Kolyvagin|first=V. A.|title=The Grothendieck Festschrift, Vol. '''II'''|publisher=Birkhäuser|location=Boston|series=Progress in Mathematics|isbn=978-0-8176-3428-5|doi=10.1007/978-0-8176-4575-5_11|mr=1106906|year=1990|volume=87|chapter=Euler systems|pages=435–483}}</ref>
* [[Ruth Lawrence]] publishes a paper on [[Homology (mathematics)|homological]] representations of the [[Iwahori–Hecke algebra|Hecke algebra]], introducing, among other things, certain novel linear representations of the [[braid group]], the [[Lawrence–Krammer representation]].<ref>{{cite journal|first=R. J.|last=Lawrence|title=Homological representations of the Hecke algebra|volume=135|year=1990|pages=141–191|journal=[[Communications in Mathematical Physics]]|issue=1 |url=http://projecteuclid.org/DPubS/Repository/1.0/Disseminate?view=body&id=pdf_1&handle=euclid.cmp/1104201923|format=PDF|access-date=2011-11-29|bibcode = 1990CMaPh.135..141L |doi = 10.1007/BF02097660 |s2cid=121644260 }}</ref>