natural boundary


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natural boundary

[′nach·rəl ′bau̇n·drē]
(mathematics)
Those points of the boundary of a region where an analytic function is defined through which the function cannot be continued analytically.
References in periodicals archive ?
The Mersey is the natural boundary separating Lancashire from Cheshire; Southport in Lancashire and the Wirral Peninsula in Cheshire, the natural locations fo rthese areas.
The 80cm-high fence was later put up across the shared garden to support a hedge intended to form a natural boundary between the judge's property, a former rectory, and the Malias' home, a grade II-listed 14th century pele tower.
He said: "We have always been concerned that the M6 Toll would become the natural boundary of Birmingham.
Most of the walks go through the Sierra de Gredos mountains, which serve as a natural boundary between those regions.
The Pyrenees Mountains form a natural boundary between these two countries: --
Embarrassingly, the judge has had to submit a retrospective application for permission to retain the fence, which supports a recently-planted hedge intended to eventually form a natural boundary between the two properties.
I left the dyke at Montgomery for a short break, and later rejoined the trail at Buttington, near Welshpool, where the River Severn (said to be a corruption of its Welsh name, Hafren) provided the Mercians with an alternative natural boundary.
C) The lake that forms a natural boundary between Democratic Republic of Congo and Tanzania: --
At the same time, it forms a natural boundary to the property and a private, walled garden.
This attractive development of two, three and four-bedroom homes is situated within a natural boundary of mature trees.
The hills became a great natural boundary of the western borders of the Saxon kingdom.