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References
- 1 2 Weisstein, Eric W. "Uniqueness Theorem". mathworld.wolfram.com. Retrieved 2019-11-29.
- ↑ "The uniqueness theorem". farside.ph.utexas.edu. Retrieved 2019-11-29.
- ↑ "Existence and Uniqueness". www.sosmath.com. Retrieved 2019-11-29.
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