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  • 06B25  (1)
  • 79.20.Ds  (1)
  • 1990-1994  (2)
  • 1970-1974
  • 1990  (2)
  • 1971
  • 1
    Electronic Resource
    Electronic Resource
    Complementing lattice-ordered groups: The projectable case (1990)
    Springer
    Order 7 (1990), S. 183-203 
    Details
    ISSN: 1572-9273
    Keywords: 06C15 ; 06B25 ; Complementation ; projectable l-groups
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics
    Notes: Abstract A complemented l-group G is one in which to each a ∈ G there corresponds a b ∈ G so that |a|⋏|b|=0, while |a|⋎|b| is a unit of G. For projectable l-groups this is so precisely when the group possesses a unit. The article introduces the notion of complementation, and the situation for projectable l-groups is analyzed in some detail; in particular, it is shown that any projectable l-group having a projectable complementation in which it is convex has a unique maximal one of this kind.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00383766
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  • 2
    Electronic Resource
    Electronic Resource
    Laser melting of GaAs covered with thin metal layers (1990)
    Springer
    Applied physics 51 (1990), S. 437-445 
    Details
    ISSN: 1432-0630
    Keywords: 61.70.Tm ; 79.20.Ds ; 72.80.Ey
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract GaAs melting simulations with a pulsed ruby laser are reported. The presence of a thin metal layer deposited on the GaAs surface gives rise to a reduction in the melting threshold and to an increase of melted depths when compared with nude GaAs surfaces. Melting thresholds around 0.3 J/cm2 for nude GaAs surface and slightly below 0.25 J/cm2 for GaAs covered with a 120 Å tin layer are predicted in reasonable agreement with experimental results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00348387
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    Paper (German National Licenses)
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