connectedsum
nounUK /kəˈnɛktɪd sʌm/
US /kəˈnɛktɪd sʌm/
A connected sum is a way to join two shapes together by cutting a small hole in each and gluing the holes together.
In topology class, we learned that the connected sum of two donuts is a donut with two holes.
OTHER MEANINGS
2. In mathematics, the operation of removing an open ball from each of two manifolds and identifying the resulting boundary spheres.
The connected sum of two spheres is again a sphere.
3. A combined total formed by linking separate parts into one whole.
The report presented a connected sum of all regional sales figures.
4. In graph theory, a way of combining two graphs by joining them at a single shared vertex.
The connected sum of the two graphs produced a larger network with one common node.