Pith Number

pith:UBMUQ23H

pith:2015:UBMUQ23HHKIQ6ZW6SECXV3WN27

not attested not anchored not stored refs pending

Modelling anisotropic fluid spheres in general relativity

Matt Visser (Victoria University of Wellington), Petarpa Boonserm (Chulalongkorn University), Tritos Ngampitipan (Chulalongkorn University)

arxiv:1501.07044 v3 · 2015-01-28 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UBMUQ23HHKIQ6ZW6SECXV3WN27}

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.

Cited by

1 paper in Pith

The Kiselev black hole is neither perfect fluid, nor is it quintessence

Receipt and verification

First computed	2026-05-18T00:29:33.892646Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a059486b673a910f66de91057aeecdd7d6a0d83203417be827d46921da8c040d

Aliases

arxiv: 1501.07044 · arxiv_version: 1501.07044v3 · doi: 10.48550/arxiv.1501.07044 · pith_short_12: UBMUQ23HHKIQ · pith_short_16: UBMUQ23HHKIQ6ZW6 · pith_short_8: UBMUQ23H

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/UBMUQ23HHKIQ6ZW6SECXV3WN27 \
  | 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: a059486b673a910f66de91057aeecdd7d6a0d83203417be827d46921da8c040d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "838fbd27e144fb61526e9e5019d0ae2687f4743f2984b41df2cd377aee64f0d8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2015-01-28T09:37:19Z",
    "title_canon_sha256": "0f1481158006f605bb2ac19e6003f9aa8001777ac08298af7b459d0cfa1ac4d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.07044",
    "kind": "arxiv",
    "version": 3
  }
}