Pith Number

pith:7LSARATT

pith:2011:7LSARATTIO54XDR7OQ72CCTWE2

not attested not anchored not stored refs pending

Hyperbolic hydra

Noel Brady, Tim Riley, Will Dison

arxiv:1105.1535 v1 · 2011-05-08 · 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{7LSARATTIO54XDR7OQ72CCTWE2}

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	2026-05-18T04:22:39.232956Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fae408827343bbcb8e3f743fa10a7626a4c81643b47c214c0c382454e97a5912

Aliases

arxiv: 1105.1535 · arxiv_version: 1105.1535v1 · doi: 10.48550/arxiv.1105.1535 · pith_short_12: 7LSARATTIO54 · pith_short_16: 7LSARATTIO54XDR7 · pith_short_8: 7LSARATT

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/7LSARATTIO54XDR7OQ72CCTWE2 \
  | 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: fae408827343bbcb8e3f743fa10a7626a4c81643b47c214c0c382454e97a5912

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dac12726e124235ba5c2aac530c297f83d5db74f23f3fe5d81f549f01e4d4435",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GR",
    "submitted_at": "2011-05-08T17:12:38Z",
    "title_canon_sha256": "d0491e8ab0cae64b3cc4e7688b6ae72a60f9ec24efb7fa777dd8be147b1eff34"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.1535",
    "kind": "arxiv",
    "version": 1
  }
}