Pith Number

pith:2V6CLYXI

pith:2011:2V6CLYXI5QYYOM6LF5MJK5PFQX

not attested not anchored not stored refs pending

Is the post-AGB star SAO 40039 mildly H-deficient?

David L. Lambert, Gajendra Pandey, S. Sumangala Rao, Sunetra Giridhar

arxiv:1107.1316 v1 · 2011-07-07 · 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{2V6CLYXI5QYYOM6LF5MJK5PFQX}

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	2026-05-18T02:01:22.063954Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d57c25e2e8ec318733cb2f589575e585e2b5f842dd976a5c57e2005434778788

Aliases

arxiv: 1107.1316 · arxiv_version: 1107.1316v1 · doi: 10.48550/arxiv.1107.1316 · pith_short_12: 2V6CLYXI5QYY · pith_short_16: 2V6CLYXI5QYYOM6L · pith_short_8: 2V6CLYXI

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/2V6CLYXI5QYYOM6LF5MJK5PFQX \
  | 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: d57c25e2e8ec318733cb2f589575e585e2b5f842dd976a5c57e2005434778788

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d12a7304a5bf4d4e48ca3a120bd7a3ae0e4d53aeb24d980fddcf847ebb74002a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-07-07T08:49:50Z",
    "title_canon_sha256": "e028048cd41fa8af79af74a41cb8d03a0e35f149da068e51e48846ac495e0bf0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.1316",
    "kind": "arxiv",
    "version": 1
  }
}