Pith Number

pith:2OP7ISO7

pith:2018:2OP7ISO7Y2YMERHD4XDM2J45ZS

not attested not anchored not stored refs pending

Barycenters of points in polytope skeleta

Florian Frick, Michael Gene Dobbins

arxiv:1809.01613 v1 · 2018-09-05 · math.MG · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2OP7ISO7Y2YMERHD4XDM2J45ZS}

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	2026-05-18T00:06:27.090857Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d39ff449dfc6b0c244e3e5c6cd279dcca3e05cf78ab8a120f596dedf5d4c6108

Aliases

arxiv: 1809.01613 · arxiv_version: 1809.01613v1 · doi: 10.48550/arxiv.1809.01613 · pith_short_12: 2OP7ISO7Y2YM · pith_short_16: 2OP7ISO7Y2YMERHD · pith_short_8: 2OP7ISO7

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/2OP7ISO7Y2YMERHD4XDM2J45ZS \
  | 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: d39ff449dfc6b0c244e3e5c6cd279dcca3e05cf78ab8a120f596dedf5d4c6108

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6da526d1d976f9e0a978a5b5ceedc9eb1339cd592bb2eb2e95cbf377e3be680f",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2018-09-05T16:38:13Z",
    "title_canon_sha256": "ba4dd4f3e21fede77ff72d576ef24511e349b7249f93de0e1d50976fe41b7169"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.01613",
    "kind": "arxiv",
    "version": 1
  }
}