Tā qùshì hòu, xuéshengmen wèi tā biān le yí bù jìniàn wénjí.
After he died, his students compiled a memorial volume of writings in his honor.
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usage
A 文集 gathers writings by one author or several. Compare 全集 'complete works', which aims to include everything, and 选集 'selected works', a chosen few. A 论文集 is a collection of academic papers.