| 21. | Singmaster notation was not widely known at the time of publication.
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| 22. | There are other ways of producing postfix expressions from infix notation.
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| 23. | Requirements come in a variety of styles, notations and formality.
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| 24. | Unlike western notation, numbering Japanese game records is not obligatory.
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| 25. | Despite the notation, there was additional work to be done,
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| 26. | Algebraic chess notation is the accepted standard for recording games today.
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| 27. | Zimbabwe's Dumisani Maraire originated mbira nyunga nyunga number notation.
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| 28. | This is known as Dirac notation or bra-ket notation.
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| 29. | This is known as Dirac notation or bra-ket notation.
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| 30. | At the bottom is a notation in Haddon's handwriting:
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