Abstract
A direct evidence for the existence of spacetime singularities is the existence of singularities in vacuum solutions of the Einstein equation. A singular vacuum solution implies that spacetime itself may have singularities. In this paper, we exemplify that a singular vacuum solution can also serve as a non-vacuum solution of the Einstein equation with a singular matter source. If so, we may be able to think that there is no singularity in a vacuum spacetime; the singularity comes from an artificial singular matter source.
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