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Ren vs Rel - What's the difference?

ren | rel |

As a verb ren

is to groan, moan.

As a preposition rel is

(mathematics) relative to.

ren

English

(wikipedia ren)

Etymology 1

From (etyl) ren.

Noun

(es)
  • (anatomy) A kidney.
    • Related terms
    * renal

    Etymology 2

    From (etyl) .

    Noun

    (en noun)
  • (lb) One's secret name, as part of the soul in ancient Egyptian mythology.
  • * 1983 , Norman Mailer, Ancient Evenings :
    • For the Ren did not belong to the man, but came out of the Celestial Waters to enter an infant in the hour of his birth and might not stir again until it was time to go back.

    Anagrams

    * * ----

    rel

    English

    Preposition

    (English prepositions)
  • (mathematics) Relative to.
  • * 1994 , N[ikita] Netsvetaev, "Diffeomorphism Criteria for Simply Connected Even-Dimensional Manifolds", in, Oleg Viro, editor, Topology of Manifolds and Varieties , Advances in Soviet Mathematics [series] 18, [publisher], ISBN 0821841246, page 237,
    • Since M_0 and M_1 are cobordant rel boundary and f_0, f_1 are n -connected, the number \delta:=\frac12(\mathrm{rk} H_nM_0-\mathrm{rk}H_nM_1) is a nonnnegative integer.
  • * 1997 , Paul Selick, Introduction to Homotopy Theory , Fields Institute Monographs [series], [publisher], ISBN 0821806904, page 15,
    • The following notations are in common use: H:f\simeq g (rel A'') means that ''H'' is a homotopy rel ''A'' from ''f'' to ''g ....
  • * 2002 , , Algebraic Topology ], [[w:Cambridge University Press, Cambridge], ISBN 0521795400, page 355,
    • Then in n\ge n', there is a map h:Z\to Z' such that h, A=g and gf\simeq f'h rel' ''A'', so the diagram above is commutative up to homotopy '''rel ''A .

    Anagrams

    * ----