{"ID":"20250709134038-qjup165","Spec":"1","Type":"NodeDocument","Properties":{"custom-categories":"笔记","custom-custom-Haloweb-yaml":"---_esc_newline_created: '2025-07-09 13:40:38'_esc_newline_updated: '2025-07-09 18:10:25'_esc_newline_title: 线性代数（初步）_esc_newline_slug: linear-algebra-preliminary-zqbgwg_esc_newline_permalink: siyuan://blocks/20250709134038-qjup165_esc_newline_categories:_esc_newline_  - 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