Pith Number

pith:DDHVRESS

pith:2014:DDHVRESS5BDSU5DHRPOB7NOGBJ

not attested not anchored not stored refs pending

PCA of PCA: Principal Component Analysis of Partial Covering Absorption in NGC 1365

A. C. Fabian, D. J. Walton, G. Risaliti, M. L. Parker

arxiv:1404.2611 v1 · 2014-04-09 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DDHVRESS5BDSU5DHRPOB7NOGBJ}

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	2026-05-18T01:43:35.951581Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

18cf589252e8472a74678bdc1fb5c60a53cef49c48163975b1a8cddd466afdf3

Aliases

arxiv: 1404.2611 · arxiv_version: 1404.2611v1 · doi: 10.48550/arxiv.1404.2611 · pith_short_12: DDHVRESS5BDS · pith_short_16: DDHVRESS5BDSU5DH · pith_short_8: DDHVRESS

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/DDHVRESS5BDSU5DHRPOB7NOGBJ \
  | 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: 18cf589252e8472a74678bdc1fb5c60a53cef49c48163975b1a8cddd466afdf3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7f52980ff0f2fcc17b55b50decb40b59b07f57703dfdaaa7ed1bec3099c42fd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2014-04-09T20:05:04Z",
    "title_canon_sha256": "5acf8d8bf6f763ccf2866bd988efa89503c7d3e0e1cea0af307245b7b41b78ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.2611",
    "kind": "arxiv",
    "version": 1
  }
}