Pith Number

pith:DPT2C37R

pith:2009:DPT2C37RX5HCLC7WX7YJBWLP53

not attested not anchored not stored refs pending

Strange stars with different quark mass scalings

Ang Li, Ju-Fu Lu, Ren-Xin Xu

arxiv:0905.3439 v2 · 2009-05-21 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DPT2C37RX5HCLC7WX7YJBWLP53}

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	2026-05-18T03:25:46.909994Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1be7a16ff1bf4e258bf6bff090d96feeca7392ec8180da08162c65d8b42d7e67

Aliases

arxiv: 0905.3439 · arxiv_version: 0905.3439v2 · doi: 10.48550/arxiv.0905.3439 · pith_short_12: DPT2C37RX5HC · pith_short_16: DPT2C37RX5HCLC7W · pith_short_8: DPT2C37R

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/DPT2C37RX5HCLC7WX7YJBWLP53 \
  | 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: 1be7a16ff1bf4e258bf6bff090d96feeca7392ec8180da08162c65d8b42d7e67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "632ed8a937c974559802d142c02d1b698fe8fe70c7b637287d4e5602e6be286c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-05-21T05:20:18Z",
    "title_canon_sha256": "7ee7a13fe5bbccf464d5eddc2d853a316074a4c459139849b8998cc01a07c950"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.3439",
    "kind": "arxiv",
    "version": 2
  }
}