math formulas...public domain material?

Subject: Re: math formulas...public domain material?

Comments:
: I am a math teacher. I have created many math formula posters that hang on my classroom walls. Recently a administrator told me that I couldn't display my posters because the "math formulas" were copyrighted material. He used copyrighted math books as his legal means. I responded that the "math formulas" that are displayed were of "general math knowledge" or public domain and that it was permissible to make and display such posters. Besides if one math book claimed the formulas were "their copyrighted material" then how could all of the other math books be using them also. : My question is...who's right in this situation? Any help in this matter would be great. : Steve

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