Pith Number

pith:HJQ5MY6E

pith:2019:HJQ5MY6EXUOF4HYOO7E4ZTBKXM

not attested not anchored not stored refs pending

Fast and Accurate Proper Orthogonal Decomposition using Efficient Sampling and Iterative Techniques for Singular Value Decomposition

Madras), M. Ramakrishna (1), V. Charumathi (1), Vinita Vasudevan (1) ((1) Indian Institute of Technology

arxiv:1905.05107 v3 · 2019-05-13 · math.NA · cs.NA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HJQ5MY6EXUOF4HYOO7E4ZTBKXM}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-06-04T20:14:30.300876Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a61d663c4bd1c5e1f0e77c9cccc2abb2b3fc43015d4f19c3187262a4254fb11

Aliases

arxiv: 1905.05107 · arxiv_version: 1905.05107v3 · doi: 10.48550/arxiv.1905.05107 · pith_short_12: HJQ5MY6EXUOF · pith_short_16: HJQ5MY6EXUOF4HYO · pith_short_8: HJQ5MY6E

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/HJQ5MY6EXUOF4HYOO7E4ZTBKXM \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 3a61d663c4bd1c5e1f0e77c9cccc2abb2b3fc43015d4f19c3187262a4254fb11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83a9d68e2ad6d7431a9bf863dcc53894c539fa114bc8052d29263f93e151d122",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-05-13T15:51:23Z",
    "title_canon_sha256": "a290d0eb9d3898d1551713403c14846fda33cb2c4a7610fc48b16b3512a17f80"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.05107",
    "kind": "arxiv",
    "version": 3
  }
}