Open Questions and the Manifest Image

An Open and Shut Case: Epistemic Closure in the Manifest Image*

The epistemic closure principle says that knowledge is closed under known entailment. The closure principle is deeply implicated in numerous core debates in contemporary epistemo logy. Closure’s opponents claim that there are good theoretical reasons to abandon it. Closure’s proponents claim that it is a defining feature of ordinary thought and talk and, thus, abandoning it is radically revisio...

the effects of cooperative versus individual directed reading thinking activities on students inferential and referential questions

two groups of students were assigned as experimental and control ones, and were given instruction on directed reading-thinking activities and after some treatment, they were post-tested. although the initial pre-test did not show any significant differences, the final post-test result revealed that the cooperative reading comprehension helped the experimental group. the cooperative students’...

Randomness and Computability: Open Questions

4 Conclusions and Open Questions

arose naturally is: Is the bi diam always bounded by O(D 2) for graphs with diameter D ? A negative answer could imply a better lower bound. However, we have recently shown ((EMZ]) that bi diam(G) = (D 2 G), where G is any 2-edge connected graph, and thus the answer to the question is positive (this result was independently proved by D]). It implies that, using the same technique we used, one c...

Open Questions in Tiling

In the following survey, we consider connections between several open questions regarding tilings in general settings. Along the way, we support a careful revision of the de nition of aperiodicity, and pose several new conjectures. We also give several new examples. Over the years a number of interesting questions have been asked about the combinatorial complexity of tilings in the plane or oth...