Abstract
The small-scale anisotropy in pure baryonic universes, with and without a cosmological constant, is calculated. If we restrict ourselves to the inflationary requirement of a flat universe, pure baryonic models are not consistent with the present upper limits on the fine-scale anisotropy even if recourse is made to a cosmological constant Lambda = 1 - Omega<SUB>0.</SUB> However, a cold dark matter-dominated model may be consistent with the observations if (Omega<SUB>0)(h)</SUB> greater than or equal to 0.05 and Lambda = 1 - omega<SUB>0.</SUB> Such a scheme might reconcile the astronomical determinations of Omega<SUB>0</SUB> with the inflationary prediction of a flat universe.
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