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| Filter | Status | Condition | Details |
|---|---|---|---|
| HTTP status | PASS | download_http_code = 200 | HTTP 200 |
| Age cutoff | PASS | download_stamp > now() - 6 MONTH | 1.4 months ago |
| History drop | PASS | isNull(history_drop_reason) | No drop reason |
| Spam/ban | PASS | fh_dont_index != 1 AND ml_spam_score = 0 | ml_spam_score=0 |
| Canonical | PASS | meta_canonical IS NULL OR = '' OR = src_unparsed | Not set |
| Property | Value | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| URL | https://mathworld.wolfram.com/Eigenvalue.html | |||||||||
| Last Crawled | 2026-04-22 18:11:52 (1 month ago) | |||||||||
| First Indexed | 2020-04-27 18:30:48 (6 years ago) | |||||||||
| HTTP Status Code | 200 | |||||||||
| Content | ||||||||||
| Meta Title | Eigenvalue -- from Wolfram MathWorld | |||||||||
| Meta Description | Eigenvalues are a special set of scalars associated with a linear system of equations (i.e., a matrix equation) that are sometimes also known as characteristic roots, characteristic values (Hoffman and Kunze 1971), proper values, or latent roots (Marcus and Minc 1988, p. 144). The determination of the eigenvalues and eigenvectors of a system is extremely important in physics and engineering, where it is equivalent to matrix diagonalization and arises in such common applications as stability... | |||||||||
| Meta Canonical | null | |||||||||
| Boilerpipe Text | heavy column, fetched on demand | |||||||||
| Markdown | heavy column, fetched on demand | |||||||||
| Readable Markdown | heavy column, fetched on demand | |||||||||
| ML Classification | ||||||||||
| ML Categories |
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| ML Page Types |
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| ML Intent Types |
Raw JSON{
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| Content Metadata | ||||||||||
| Language | en | |||||||||
| Author | null | |||||||||
| Publish Time | 2007-12-29 00:00:00 (18 years ago) | |||||||||
| Original Publish Time | 2007-12-29 00:00:00 (18 years ago) | |||||||||
| Republished | No | |||||||||
| Word Count (Total) | 878 | |||||||||
| Word Count (Content) | 790 | |||||||||
| Links | ||||||||||
| External Links | 10 | |||||||||
| Internal Links | 97 | |||||||||
| Technical SEO | ||||||||||
| Meta Nofollow | No | |||||||||
| Meta Noarchive | No | |||||||||
| JS Rendered | Yes | |||||||||
| Redirect Target | null | |||||||||
| Performance | ||||||||||
| Download Time (ms) | 134 | |||||||||
| TTFB (ms) | 102 | |||||||||
| Download Size (bytes) | 72,638 | |||||||||
| Location | ||||||||||
| Host ID | 184 (laksa184) | |||||||||
| Partition ID | 18 | |||||||||
| Root Hash | 3744487911316863784 | |||||||||
| Unparsed URL | com,wolfram!mathworld,/Eigenvalue.html s443 | |||||||||