Pith Number

pith:T3HTFY2V

pith:2009:T3HTFY2V3ZWAV3H7B4LXWV4GWS

not attested not anchored not stored refs pending

Quadrilateral-octagon coordinates for almost normal surfaces

Benjamin A. Burton

arxiv:0904.3041 v3 · 2009-04-20 · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T3HTFY2V3ZWAV3H7B4LXWV4GWS}

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	2026-05-18T04:33:04.379791Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ecf32e355de6c0aecff0f177b5786b493ca7a7c77d7b45660b36a2370003035

Aliases

arxiv: 0904.3041 · arxiv_version: 0904.3041v3 · doi: 10.48550/arxiv.0904.3041 · pith_short_12: T3HTFY2V3ZWA · pith_short_16: T3HTFY2V3ZWAV3H7 · pith_short_8: T3HTFY2V

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/T3HTFY2V3ZWAV3H7B4LXWV4GWS \
  | 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: 9ecf32e355de6c0aecff0f177b5786b493ca7a7c77d7b45660b36a2370003035

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "84bcd19d92c5fde6a1b9b17451c78cd48b40d2370b1bf0c11eba102d8124d98d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2009-04-20T14:20:36Z",
    "title_canon_sha256": "08d4a3a7212be6068bc261cacbaa74331f34d71d573b5ea2f4d1c447ce69fbb5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3041",
    "kind": "arxiv",
    "version": 3
  }
}