Pith Number

pith:6UL2C2UE

pith:2009:6UL2C2UERVYJE6FQ44EZ7KSDTH

not attested not anchored not stored refs pending

Relativistically expanding cylindrical electromagnetic fields

(Institute of Astronomy, K.N. Gourgouliatos, University of Cambridge)

arxiv:0904.2125 v1 · 2009-04-14 · 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{6UL2C2UERVYJE6FQ44EZ7KSDTH}

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	2026-05-18T02:14:06.076186Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f517a16a848d709278b0e7099faa4399c097512cb40385f2b650224ecbf795bb

Aliases

arxiv: 0904.2125 · arxiv_version: 0904.2125v1 · doi: 10.48550/arxiv.0904.2125 · pith_short_12: 6UL2C2UERVYJ · pith_short_16: 6UL2C2UERVYJE6FQ · pith_short_8: 6UL2C2UE

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/6UL2C2UERVYJE6FQ44EZ7KSDTH \
  | 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: f517a16a848d709278b0e7099faa4399c097512cb40385f2b650224ecbf795bb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d9029bf686090205baf7c53924f9c0d80dfc7ddf2a923d7c5c461eebdbef008",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-04-14T14:03:49Z",
    "title_canon_sha256": "6fd161a1220333c911d222a8f1639b7709c485956f13f19aa45c28cb1a11e5c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.2125",
    "kind": "arxiv",
    "version": 1
  }
}