Pith Number

pith:XPSKSIU6

pith:2006:XPSKSIU6XUSR6RXYZKXEWNFZPR

not attested not anchored not stored refs pending

Threshold between Spontaneous and Cloud-Collisional Star Formation

Fumi Egusa, Shinya Komugi, Yoshiaki SOFUE

arxiv:astro-ph/0609378 v1 · 2006-09-14 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XPSKSIU6XUSR6RXYZKXEWNFZPR}

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	2026-05-18T01:40:29.657840Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bbe4a9229ebd251f46f8caae4b34b97c58005a1e70beba718fe1eac8945857c0

Aliases

arxiv: astro-ph/0609378 · arxiv_version: astro-ph/0609378v1 · doi: 10.48550/arxiv.astro-ph/0609378 · pith_short_12: XPSKSIU6XUSR · pith_short_16: XPSKSIU6XUSR6RXY · pith_short_8: XPSKSIU6

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/XPSKSIU6XUSR6RXYZKXEWNFZPR \
  | 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: bbe4a9229ebd251f46f8caae4b34b97c58005a1e70beba718fe1eac8945857c0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fbe40f9d1c7533d2674200fd4202a37988f0f330ef702f6d7600e19644e884d4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-09-14T06:36:47Z",
    "title_canon_sha256": "1c5e1eb5fa27b609d835937b6ecd8421e6d4c7ca32c3b9369286afc9fb91da6b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0609378",
    "kind": "arxiv",
    "version": 1
  }
}