Signos más y menos (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Signos más y menos" in Spanish language version.

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2books.google.com

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1jewishencyclopedia.com

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1decodeunicode.org

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1mathsisfun.com

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archive.org

Schwartzman, Steven (1994). The words of mathematics. The Mathematical Association of America. p. 136. ISBN 9780883855119.

books.google.com

Christian-Jewish Dialogue: Theological Foundations By Peter von der Osten-Sacken (1986 – Fortress Press) ISBN 0-8006-0771-6 "In Israel the plus sign used in mathematics is represented by a horizontal stroke with a vertical hook instead of the sign otherwise used all over the world, because the latter is reminiscent of a cross." (Page 96)
Henri Picciotto (1990). The Algebra Lab. Creative Publications. p. 9. ISBN 978-0-88488-964-9.

decodeunicode.org

Unicode U+FB29 reference page This form of the plus sign is also used on the control buttons at individual seats on board the El Al Israel Airlines aircraft.

jewishencyclopedia.com

Kaufmann Kohler (1901–1906). «Cross». En Cyrus Adler, ed. Jewish Encyclopedia.

mathsisfun.com

«Subtraction». www.mathsisfun.com. Consultado el 26 de agosto de 2020.

microsoft.com

office.microsoft.com

«Microsoft Office Excel Calculation operators and precedence». Archivado desde el original el 11 de agosto de 2009. Consultado el 29 de julio de 2009.

web.archive.org

«Microsoft Office Excel Calculation operators and precedence». Archivado desde el original el 11 de agosto de 2009. Consultado el 29 de julio de 2009.

wolfram.com

mathworld.wolfram.com

Weisstein, Eric W. «Subtraction». mathworld.wolfram.com (en inglés). Consultado el 26 de agosto de 2020.