arXiv · math/0006199
We show that a Tychonoff discretely star-Lindelof space can have arbitrarily big extent and note that there are consistent examples of normal discretely star-Lindelof spaces with uncountable extent.
Mikhail Matveev. 2000-06-26. On spaces in countable web. https://arxiv.org/abs/math/0006199
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