Pith Number

pith:6OJN6YZD

pith:2021:6OJN6YZDY2FTS4YO2FX6QQQJLT

not attested not anchored not stored refs pending

Cuspy and fractured black hole shadows in a toy model with axisymmetry

Bin Wang, Cheng-Gang Shao, Rui-Hong Yue, Songbai Chen, Wei-Liang Qian

arxiv:2102.03820 v4 · 2021-02-07 · 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{6OJN6YZDY2FTS4YO2FX6QQQJLT}

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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

4 papers in Pith

On the Cuspy Structure of Rotating Wormhole Shadows

Families of regular spacetimes and energy conditions

Gravity/thermodynamics correspondence via black hole shadows

Receipt and verification

First computed	2026-07-05T03:56:45.712759Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f392df6323c68b39730ed16fe842095ce52ef041927d3328a1adf1830cf96b34

Aliases

arxiv: 2102.03820 · arxiv_version: 2102.03820v4 · doi: 10.48550/arxiv.2102.03820 · pith_short_12: 6OJN6YZDY2FT · pith_short_16: 6OJN6YZDY2FTS4YO · pith_short_8: 6OJN6YZD

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/6OJN6YZDY2FTS4YO2FX6QQQJLT \
  | 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: f392df6323c68b39730ed16fe842095ce52ef041927d3328a1adf1830cf96b34

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40fd05869ed7913c87df34be6e188aff5725dad576ec38223c799fbc4fd3b314",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2021-02-07T15:32:08Z",
    "title_canon_sha256": "bef11778193f80ac882aa0165606f9d3943d720a53244b6b3105e37a8b143779"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.03820",
    "kind": "arxiv",
    "version": 4
  }
}