Pith Number

pith:2VL7RDCA

pith:2020:2VL7RDCA6XUONQKTYETVH2C3X7

not attested not anchored not stored refs pending

A theoretical investigation of the Humphreys-Davidson limit at high and low metallicity

Erin R. Higgins, Jorick S. Vink

arxiv:2002.07204 v1 · 2020-02-17 · 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{2VL7RDCA6XUONQKTYETVH2C3X7}

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	2026-07-05T00:51:40.956373Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d557f88c40f5e8e6c153c12753e85bbff55b99c910cf8cec95c6cafdc39520db

Aliases

arxiv: 2002.07204 · arxiv_version: 2002.07204v1 · doi: 10.48550/arxiv.2002.07204 · pith_short_12: 2VL7RDCA6XUO · pith_short_16: 2VL7RDCA6XUONQKT · pith_short_8: 2VL7RDCA

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/2VL7RDCA6XUONQKTYETVH2C3X7 \
  | 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: d557f88c40f5e8e6c153c12753e85bbff55b99c910cf8cec95c6cafdc39520db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d8d78703d7a64e7b2bdb46939ee4bf0e2789c3f349d37b3ed42571202a66e4f",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-02-17T19:06:19Z",
    "title_canon_sha256": "f5e3d78dd846ae935d76e1d576f65e04141f0855f72fafb8239c5b9ff9a94e26"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.07204",
    "kind": "arxiv",
    "version": 1
  }
}