The "Simple" Post Correspondence Problem is Decidable, Open Problems

[@salahkanjo9329]

I think you meant y = n - m for the second tile, otherwise the difference can be negative. (5:53)

[@shauncomino5849]

7:10 you claim an alphabet of two characters is decidable but in your other video you prove that it isn't:
ua-cam.com/video/AQka06XiJA0/v-deo.html
I'm confused