History
The idea of a Heegaard splitting was introduced by Heegaard (1898). While Heegaard splittings were studied extensively by mathematicians such as Wolfgang Haken and Friedhelm Waldhausen in the 1960s, it was not until a few decades later that the field was rejuvenated by Casson & Gordon (1987), primarily through their concept of strong irreducibility.
Read more about this topic: Heegaard Splitting
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