Pith Number

pith:R2PJRNWY

pith:2021:R2PJRNWYN75HXHJSJ6RYYVAMOB

not attested not anchored not stored refs pending

Superadiabaticity and the metallicity independence of the Humphreys-Davidson limit

Andreas A. C. Sander, Erin R. Higgins, Gautham N. Sabhahit, Jorick S. Vink

arxiv:2107.02183 v2 · 2021-07-05 · astro-ph.SR · 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{R2PJRNWYN75HXHJSJ6RYYVAMOB}

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	2026-07-05T03:04:05.743396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8e9e98b6d86ffa7b9d324fa38c540c70451860d477edf9b5a3f6451224c0d25c

Aliases

arxiv: 2107.02183 · arxiv_version: 2107.02183v2 · doi: 10.48550/arxiv.2107.02183 · pith_short_12: R2PJRNWYN75H · pith_short_16: R2PJRNWYN75HXHJS · pith_short_8: R2PJRNWY

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/R2PJRNWYN75HXHJSJ6RYYVAMOB \
  | 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: 8e9e98b6d86ffa7b9d324fa38c540c70451860d477edf9b5a3f6451224c0d25c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a48c3dbedb31f55cc8c0a441862f7f6c80badeabdef49ac422aa911aab7398b0",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2021-07-05T18:00:02Z",
    "title_canon_sha256": "f660af9ea08fb94aa63f7ed65e360c5bfd84515d0159a6edfb3bdcd4690d55f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.02183",
    "kind": "arxiv",
    "version": 2
  }
}