Plan of Turkey Lane Survey, Cumberland, Maine, 2005

Road Survey for Town of Cumberland of Turkey Lane, Cumberland, Maine was created by Boundary Points in 2005.https://digitalmaine.com/cumberland_plans/1449/thumbnail.jp

Existing Conditions Survey for Town of Cumberland of Town Landing Road, Cumberland, Maine, 2007

Existing Conditions Survey for Town of Cumberland of Town Landing Road, Cumberland, Maine was created by Boundary Points in 2007.https://digitalmaine.com/cumberland_plans/1447/thumbnail.jp

On non-round points of the boundary of the numerical range and an application to non-selfadjoint Schr\"odinger operators

We show that non-round boundary points of the numerical range of an unbounded operator (i.e. points where the boundary has infinite curvature) are contained in the spectrum of the operator. Moreover, we show that non-round boundary points, which are not corner points, lie in the essential spectrum. This generalizes results of H\"ubner, Farid, Spitkovsky and Salinas and Velasco for the case of bounded operators. We apply our results to non-selfadjoint Schr\"odinger operators, showing that in this case the boundary of the numerical range can be non-round only at points where it hits the essential spectrum.Comment: Shortened version. To appear in Journal of Spectral Theor

Standard Boundary Survey for Town of Cumberland of Drowne Road School Property, Cumberland, Maine, 2003

Standard Boundary Survey for Town of Cumberland of Drowne Road School Property, Cumberland, Maine was created by Boundary Points in 2003.https://digitalmaine.com/cumberland_plans/1332/thumbnail.jp

Existing Conditions Survey for the Town of Cumberland of Orchard Road and Blanchard Road Extension, Cumberland, Maine, 2006

Existing Conditions Survey for the Town of Cumberland of Orchard Road and Blanchard Road Extension, Cumberland, Maine was created by Boundary Points in 2006.https://digitalmaine.com/cumberland_plans/1393/thumbnail.jp

Standard Boundary Survey for Town of Cumberland of Range Road and Bruce Hill Road, Cumberland, Maine, 2000

Standard Boundary Survey for Town of Cumberland of Range Road and Bruce Hill Road, Cumberland, Maine was created by Boundary Points in 2000.https://digitalmaine.com/cumberland_plans/1407/thumbnail.jp

Standard Boundary Survey for Town of Cumberland of Blackstrap Road Property, Cumberland, Maine, 2002

https://digitalmaine.com/cumberland_plans/1281/thumbnail.jp

Standard Boundary Survey for Town of Cumberland of Range Road Property, Cumberland, Maine, 2005

Standard Boundary Survey for Town of Cumberland of Range Road Property, Cumberland, Maine was created by Boundary Points in 2005.https://digitalmaine.com/cumberland_plans/1409/thumbnail.jp

Existing Conditions Survey for Town of Cumberland of Farwell Avenue, Cumberland, Maine, 2006

Existing Conditions Survey for Town of Cumberland of Farwell Avenue, Cumberland, Maine was created by Boundary Points in 2006.https://digitalmaine.com/cumberland_plans/1340/thumbnail.jp

Existing Conditions Survey for Town of Cumberland of Prince Street and Balsam Drive, Cumberland, Maine, 2000

Existing Conditions Survey for Town of Cumberland of Prince Street and Balsam Drive, Cumberland, Maine was created by Boundary Points in 2000.https://digitalmaine.com/cumberland_plans/1403/thumbnail.jp