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110812-165210: | Weak recurrence and Van der Waerden. |
110728-153626: | The classical proof of Van der Waerden. |
110728-150746: | The inductive part of the proof (3). |
110728-144825: | The inductive part of the proof (2). |
110728-142827: | The inductive part of the proof. |
110728-142024: | The existence of minimal sequences. |
110722-144953: | The proof in pictures (3). |
110722-143951: | The proof in pictures (2). |
110722-142055: | The proof in pictures. |
110516-152617: | Multiple recurrence (2). |
110516-144650: | Multiple recurrence. |
110516-142420: | Finding a recurrent point (2). |
110510-153856: | Finding a recurrent point. |
110510-143042: | The Irrational Shift (4). |
110510-141900: | The Irrational Shift (3). |
110510-141005: | The Irrational Shift (2). |
110502-152559: | The Irrational Shift. |
110412-151002: | The existence of recurrent points. |
110328-143124: | Upper semi-continuity (2). |
110328-140439: | Upper semi-continuity. |
110307-141923: | Recurrent points (2). |
110307-135920: | Recurrent points. |
110307-135410: | Minimal and homogeneous dynamical systems (5). |
110307-134656: | Minimal and homogeneous dynamical systems (4). |
110228-140238: | Minimal and homogeneous dynamical systems (3). |
110214-141410: | Minimal and homogeneous dynamical systems (2). |
110214-135535: | Minimal and homogeneous dynamical systems. |
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