Pith Number

pith:E4T3AZNQ

pith:2008:E4T3AZNQA6ZSHCWVCD7FOB7IVW

not attested not anchored not stored refs pending

Photon capture cones and embedding diagrams of the Ernst spacetime

Stanislav Hled\'ik, Zden\v{e}k Stuchl\'ik

arxiv:0803.2536 v1 · 2008-03-17 · 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{E4T3AZNQA6ZSHCWVCD7FOB7IVW}

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

Universality in quasinormal modes of a magnetized black hole

Receipt and verification

First computed	2026-07-04T17:09:52.479732Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2727b065b007b3238ad510fe5707e8ad89a0118b52186ba82675bed3dd74e14b

Aliases

arxiv: 0803.2536 · arxiv_version: 0803.2536v1 · doi: 10.48550/arxiv.0803.2536 · pith_short_12: E4T3AZNQA6ZS · pith_short_16: E4T3AZNQA6ZSHCWV · pith_short_8: E4T3AZNQ

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/E4T3AZNQA6ZSHCWVCD7FOB7IVW \
  | 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: 2727b065b007b3238ad510fe5707e8ad89a0118b52186ba82675bed3dd74e14b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6566c063e26c1bbd2137e01c9d8a32e5363c21921e84b5f53bdbb30e4d712c25",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2008-03-17T21:44:03Z",
    "title_canon_sha256": "65eb94b72697e3d0a4eb739a45963a62a25df87717fadad08829a33a9d334e8f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0803.2536",
    "kind": "arxiv",
    "version": 1
  }
}