Pith Number

pith:ITCIRKKV

pith:2026:ITCIRKKV4F6RXQL7PSJHZFFI2F

not attested not anchored not stored refs pending

The efficiency per free-fall time as a ratio of the Star Formation Rate to the gas-infall rate in collapsing cores: dependence on the core definition, accretion, and radial structure

Aina Palau, Enrique V\'azquez-Semadeni, Fabi\'an Quesada-Z\'u\~niga, Gilberto C. G\'omez, Javier Ballesteros-Paredes, Manuel Zamora-Avil\'es

arxiv:2606.21878 v1 · 2026-06-20 · 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{ITCIRKKV4F6RXQL7PSJHZFFI2F}

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	2026-06-23T02:13:01.742435Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

44c488a955e17d1bc17f7c927c94a8d169194a16fa2e6d96141588c0b2f9cec5

Aliases

arxiv: 2606.21878 · arxiv_version: 2606.21878v1 · doi: 10.48550/arxiv.2606.21878 · pith_short_12: ITCIRKKV4F6R · pith_short_16: ITCIRKKV4F6RXQL7 · pith_short_8: ITCIRKKV

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/ITCIRKKV4F6RXQL7PSJHZFFI2F \
  | 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: 44c488a955e17d1bc17f7c927c94a8d169194a16fa2e6d96141588c0b2f9cec5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa038dddb67adc97258c7dedc8a829171ccc0826ad3e51ac7fefc6b6df5117bc",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2026-06-20T04:40:52Z",
    "title_canon_sha256": "83eae1208eacd85fd1b334978ac9b96ce0481528fde8fe2b85d67c9684458511"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.21878",
    "kind": "arxiv",
    "version": 1
  }
}