** Authors:**
RECAİ ERDEM

** Abstract: **
I point out a simple but usually overlooked fact about the
cosmological constant problem: to solve the cosmological
constant problem it is sufficient to find a symmetry or
mechanism that sets the cosmological constant to
zero or to a tiny value at some time in the past,
provided that general relativity is the relevant theory
of gravity,
and the energy-momentum tensor (excluding
the part of the form of a cosmological constant) is
conserved.
The relevant symmetry or mechanism need not be applicable
today. Any additional cosmological constant term
induced by a phase transition in the energy-momentum
tensor in this case is compensated by a shift in
the cosmological constant term of gravitational origin.

** Keywords: **
Cosmological constant, general relativity, cosmology

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