I Reverse Polish Notation Heart T-Shirt

By Alex in Science & Tech on Jun 17, 2010 at 9:45 am


I Reverse Polish Notation Heart T-Shirt - $9.95

Be still my geeky heart! Neatoramanaut Ana models this wonderfully geeky I Reverse Polish Notation Heart T-Shirt.

What’s a Reverse Polish notation? It’s a mathematical notation where the operator (e.g. +, -, x) follows the operands. Those of you who have the old HP-10C series calculator are probably nodding in nostalgia right now!

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More I Heart T-shirts | Science T-Shirts over at the NeatoShop


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  1. kid_icarus
    Jun 17th, 2010 at 10:19 am

    whoa…..super hot…..(not talking about the shirt-although that is pretty awesome)

  2. flowlikeaharpoon
    Jun 17th, 2010 at 10:51 am

    im not mathlete enough to get the shirt, but i reverse polish notion her. she is a super hot version of beckett (from the tv show castle).

  3. IanK
    Jun 17th, 2010 at 10:55 am

    RPN is awesome. Try it!

  4. reverse_awesome
    Jun 17th, 2010 at 11:15 am

    no way… i was just reading about this on WP after reading up on the old Soviet Setun computer!

  5. Edward
    Jun 17th, 2010 at 11:16 am

    I just inherited my mother’s HP calculators, She still had a 45.

  6. soubriquet
    Jun 17th, 2010 at 12:24 pm

    “I render music from Poland, backwards”?
    Or is it something to do with taking shiny notation, and rubbing it with a filthy rag to render it dull and patinated?

  7. b, less than ten miles from Belgium.
    Jun 17th, 2010 at 1:37 pm

    I so much by the let down of polish notation by HP disappointed was. I with my father of it this afternoon talked.

    When I was at school, the math teachers always started the year telling “you can get any calculator you want, but no HP.”
    There I lifted hand and grinned I already had one.

  8. Shan Shortcut
    Jun 17th, 2010 at 2:09 pm

    ahahaahaha, I’m studying Computer Science, and they make us learn the Polish notation. It’s so darn confusing, but they insist that its actually easier to use than the normal notation once you get used to it :O

  9. Charles
    Jun 17th, 2010 at 2:45 pm

    Sadly, this t-shirt isn’t really correct. Reverse polish notation is stack based so this should be “I notation polish reverse <3" since the modifiers are operations on the object "notation" that change its meaning.

  10. pol
    Jun 17th, 2010 at 2:50 pm

    god, me old dad used to bang on and on about rpn throughout my childhood.

    kinda spoiled a good thing.

  11. dave9
    Jun 17th, 2010 at 4:19 pm

    The old farts in the audience will recognize this bumpersticker:
    “FORTH LOVE IF HONK THEN”

  12. vdev
    Jun 17th, 2010 at 4:31 pm

    Nice shirt, lovely model.

    But why did you have her model it in a kitchen?

    Please do beter next time.

  13. farleykj
    Jun 17th, 2010 at 5:00 pm

    Hey Shan,

    If you ever have to write something to evaluate mathematical expressions input by users as text, you’ll wish everyone wrote ‘em in RPN. I always convert the expression (like “(1+2)/12+88″) into a nice RPN stack, then calculate the answer.

  14. FredB
    Jun 17th, 2010 at 7:19 pm

    My HP32S II is right here on the desk. It is my everyday RPN calculator. My HP45, HP10C are stored away. The HP16C is in the kitchen. Really.

    I wish HP still made an RPN calculator in that notecard format. I thought that was brilliant design. I know the HP12 is still out there but, it isn’t RPN. I guess the business types can’t handle RPN.

    I still think in RPN with a slight slide rule accent.

  15. Mayor of Shekou
    Jun 17th, 2010 at 11:11 pm

    Check out the 12C:

    http://www.amazon.com/Blk-Gold-FINANCIAL-BUILT-FUNCT/dp/B00000JBLH

    I wish they still offered the 15C; I do more engineering than financial. I have a 15C emulator that I use on the computer as a calculator, and my mobile phone calculator lets me set it to RPN mode!

  16. Margaryna
    Jun 18th, 2010 at 6:46 am

    Charles wrote:
    >Sadly, this t-shirt isn’t really correct. Reverse polish notation
    >is stack based so this should be “I notation polish reverse <3"
    Not true – RPN is one "variable" so it's correct as it is. It could be: "I, Reverse Polish Notation, <3".

  17. Jaskier
    Jun 18th, 2010 at 8:13 am

    To co chcecie wiedzie? po polsku? Ch?tnie Wam napisz?, poniewa? te? uwielbiam polsk? mow?, a szczególnie jak w Szczebrzeszynie chrz?szcz brzmi w trzcinie:)!

  18. Christophe
    Jun 18th, 2010 at 8:51 pm

    Yoda notation it should be called

  19. Charles
    Jun 20th, 2010 at 11:57 pm

    @Margaryna, RPN can’t be a single variable unless you’re claiming very non-standard syntactic rules. Spaces are used as token delimiters, meaning “reverse”, “polish”, and “notation” are all separate tokens. For RPN to be a since variable, it would have to be written as “RPN” or “reverse-polish-notation” or use some other connectors to maintain it as a single token. To claim its a single variable in its current form is to imply context variable syntax rules for the language, which is not normal.

  20. David123
    Jan 19th, 2011 at 3:35 pm

    Having learnt it in 1974 for main frame computers I have now forgotten most.

    I wish our tutor had looked like that.


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