Pith Number

pith:OG2D7U4N

pith:2021:OG2D7U4N7TVBUALIVOF7SQOXG4

not attested not anchored not stored refs pending

Approximations of the Riley slice

Alex Elzenaar, Gaven Martin, Jeroen Schillewaert

arxiv:2111.03230 v1 · 2021-11-05 · math.GT · math.CV · math.GR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OG2D7U4N7TVBUALIVOF7SQOXG4}

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	2026-07-05T11:27:16.645776Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

71b43fd38dfcea1a0168ab8bf941d7370ac1f22fbecdc107281d512c922d826f

Aliases

arxiv: 2111.03230 · arxiv_version: 2111.03230v1 · doi: 10.48550/arxiv.2111.03230 · pith_short_12: OG2D7U4N7TVB · pith_short_16: OG2D7U4N7TVBUALI · pith_short_8: OG2D7U4N

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/OG2D7U4N7TVBUALIVOF7SQOXG4 \
  | 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: 71b43fd38dfcea1a0168ab8bf941d7370ac1f22fbecdc107281d512c922d826f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0bd9e05856ff68e82a8b808df83b2fb9560b38928cf1478ee6b16934b1ac8776",
    "cross_cats_sorted": [
      "math.CV",
      "math.GR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2021-11-05T02:44:50Z",
    "title_canon_sha256": "26f67b5d007b00da599c6adae249bb3f221b50087b8eda6e07035a27e864ae0f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.03230",
    "kind": "arxiv",
    "version": 1
  }
}