201 citations · 2.2k across the 98 of their papers we have counts for
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The effect of conformal symmetry on charged wormholes
Peter K. F. Kuhfittig
This paper discusses the effect that conformal symmetry can have on a charged wormhole. The analysis yields a physical interpretation of the conformal factor in terms of the electr…
Stable phantom-energy wormholes admitting conformal motions
Peter K. F. Kuhfittig
It has been argued that wormholes are as good a prediction of Einstein's theory as black holes but the theoretical construction requires a reverse strategy, specifying the desired…
A note on the predictability of flat galactic rotation curves
Peter K. F. Kuhfittig
Based on an exact solution of the Einstein field equations, it is proposed in this note that the dark-matter hypothesis could have led to the prediction of flat galactic rotation c…
On Helly number for crystals and cut-and-project sets
Alexey Garber
We prove existence of Helly numbers for crystals and for cut-and-project sets with convex windows. Also we show that for a two-dimensional crystal consisting of copies of a sin…