6 found
Sort by:
Disambiguations:
Ulrich Felgner [5]U. Felgner [1]
  1. U. Felgner & J. K. Truss (1999). The Independence of the Prime Ideal Theorem From the Order-Extension Principle. Journal of Symbolic Logic 64 (1):199-215.
    It is shown that the boolean prime ideal theorem BPIT: every boolean algebra has a prime ideal, does not follow from the order-extension principle OE: every partial ordering can be extended to a linear ordering. The proof uses a Fraenkel-Mostowski model, where the family of atoms is indexed by a countable universal-homogeneous boolean algebra whose boolean partial ordering has a `generic' extension to a linear ordering. To illustrate the technique for proving that the order-extension principle holds in the model we (...)
    Direct download (6 more)  
     
    My bibliography  
     
    Export citation  
  2. Ulrich Felgner (1986). [Omnibus Review]. Journal of Symbolic Logic 51 (4):1068-1070.
    Direct download (2 more)  
     
    My bibliography  
     
    Export citation  
  3. Ulrich Felgner (1982). Review: Greg Cherlin, Model Theoretic Algebra. Selected Topics. [REVIEW] Journal of Symbolic Logic 47 (1):222-223.
    Direct download  
     
    My bibliography  
     
    Export citation  
  4. Ulrich Felgner (1975). On ℵ0-Categorical Extra-Special P-Groups. Logique Et Analyse 18 (71-72):407-428.
    No categories
     
    My bibliography  
     
    Export citation  
  5. Ulrich Felgner (1971). Über das Ordnungstheorem. Mathematical Logic Quarterly 17 (1):257-272.
    No categories
    Translate to English
    | Direct download (3 more)  
     
    My bibliography  
     
    Export citation  
  6. Ulrich Felgner (1971). Models of Zf-Set Theory. New York,Springer-Verlag.
     
    My bibliography  
     
    Export citation