Monox D. I-Fly Senior Member Indonesia monoxdifly.iopc.us Joined 5133 days ago 762 posts - 664 votes Speaks: Indonesian*
| Message 1 of 26 17 April 2015 at 8:44am | IP Logged |
The title is self explanatory, isn't it? I am working on an encyclopedy about mathematicians and in one of my references, I found the symbol ℵ, which looks like the letter N. Is it a Greek letter? If yes, what letter is it and is it equivalent to N? Thanks.
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akkadboy Triglot Senior Member France Joined 5406 days ago 264 posts - 497 votes Speaks: French*, English, Yiddish Studies: Latin, Ancient Egyptian, Welsh
| Message 2 of 26 17 April 2015 at 8:50am | IP Logged |
It looks like it is a Hebrew aleph.
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Monox D. I-Fly Senior Member Indonesia monoxdifly.iopc.us Joined 5133 days ago 762 posts - 664 votes Speaks: Indonesian*
| Message 3 of 26 17 April 2015 at 8:53am | IP Logged |
Hebrew? Never knew any math notations written in Hebrew. If so, what does it represent?
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Ogrim Heptaglot Senior Member France Joined 4637 days ago 991 posts - 1896 votes Speaks: Norwegian*, English, Spanish, French, Romansh, German, Italian Studies: Russian, Catalan, Latin, Greek, Romanian
| Message 4 of 26 17 April 2015 at 8:58am | IP Logged |
My math knowledge is next no zero but maybe this Wiktionary entry will explain it to you. It says that it is the symbol for the cardinality of a well-orderable infinite set.
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Monox D. I-Fly Senior Member Indonesia monoxdifly.iopc.us Joined 5133 days ago 762 posts - 664 votes Speaks: Indonesian*
| Message 5 of 26 17 April 2015 at 9:03am | IP Logged |
Thank you. I also don't really understand but oh well. Is aleph the Hebrew equivalent of Arabic alif? If so, it's kinda weird that a letter which looks like N is an equivalent of A.
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eyðimörk Triglot Senior Member France goo.gl/aT4FY7 Joined 4097 days ago 490 posts - 1158 votes Speaks: Swedish*, English, French Studies: Breton, Italian
| Message 6 of 26 17 April 2015 at 9:18am | IP Logged |
Monox D. I-Fly wrote:
If so, it's kinda weird that a letter which looks like N is an equivalent of A. |
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Why?
Capital lambda looks like an A, capital sigma looks like an E, capital eta looks like an H, capital rho looks like a P, small nu looks like a V, small eta looks like an N... why would similarities to other alphabets, especially other alphabets not used by the language in question, matter even remotely (even if they shared a common origin 2000 years in the past)?
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eyðimörk Triglot Senior Member France goo.gl/aT4FY7 Joined 4097 days ago 490 posts - 1158 votes Speaks: Swedish*, English, French Studies: Breton, Italian
| Message 7 of 26 17 April 2015 at 10:09am | IP Logged |
By the way, in less time than it took you to write this post, and definitely in less time than you had to wait to get a response, you could have answered the question with a web search. The top results on Google to Is ℵ a Greek Letter? tells you all about Aleph, the Hebrew Alphabet, and how Aleph is used in mathematics, no need to spend several minutes looking even.
Just a tip for when you want an answer sooner rather than later.
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Serpent Octoglot Senior Member Russian Federation serpent-849.livejour Joined 6595 days ago 9753 posts - 15779 votes 4 sounds Speaks: Russian*, English, FinnishC1, Latin, German, Italian, Spanish, Portuguese Studies: Danish, Romanian, Polish, Belarusian, Ukrainian, Croatian, Slovenian, Catalan, Czech, Galician, Dutch, Swedish
| Message 8 of 26 17 April 2015 at 10:42am | IP Logged |
To me it looks much more similar to X than N.
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