The lectures are automatically copyrighted. If you intend to summarize, remember to give proper credit to the lecturer (even if you “put it in your own words” it is not your original idea and credit must be given). For anything more than a brief summary, you should get permission from the lecturer to post (written permission would be the best way to cover yourself legally). Reasoning is that the notes taken at a lecture are for your personal use as a student, but if you intend to share them with others not in your class, you need the lecturer’s permission. If this is difficult to understand, consider your course text: you paid for it and it is yours to use, but you are not permitted to photocopy it and give it to others; the material is copyrighted and the property of the copyright owner who owns the rights to distribution. To avoid problems, always get permission of the author before posting his work for others to read.

Copyright rules in this country are more stringent than in other countries.

yes. ust put them in your own words to make sure.