Parentheses in domain mean exclude, square brackets mean including If you have infinity or negative infinity, the corresponding sign needs to be parentheses. A number from 1 to infinity not including 1 would be written as (1, *insert infinity*) Including 1 [1, *insert infinity*)
Intro - History & Timeline. Verizon Communications was created on June 30, 2000 by Bell Atlantic Corp. and GTE Corp., in one of the largest mergers in U.S. business history. GTE and Bell Atlantic evolved and grew through decades of mergers, acquisitions and divestitures.
The concept of the cell phone actually began in the 1920's and was developed in the 1930's with police radios. Mobile phones were made in 1947, but the cell phone that we know â¦ today wasn't made until 1973. It was developed by Martin Cooper for Motorola and was only for government use. Public use of cell phones began in 1984.