Pith Number

pith:5MMMZGM4

pith:2021:5MMMZGM426EC7F6TR74B76UAN7

not attested not anchored not stored refs pending

On the maximum area of inscribed polygons

Dan Ismailescu, Eric Wang, Min Jung Kim

arxiv:2104.12172 v1 · 2021-04-25 · math.CO · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5MMMZGM426EC7F6TR74B76UAN7}

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	2026-07-05T02:34:54.259489Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb18cc999cd7882f97d38ff81ffa806ff14c80a5f67d88190e58218605397333

Aliases

arxiv: 2104.12172 · arxiv_version: 2104.12172v1 · doi: 10.48550/arxiv.2104.12172 · pith_short_12: 5MMMZGM426EC · pith_short_16: 5MMMZGM426EC7F6T · pith_short_8: 5MMMZGM4

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/5MMMZGM426EC7F6TR74B76UAN7 \
  | 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: eb18cc999cd7882f97d38ff81ffa806ff14c80a5f67d88190e58218605397333

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7dde14500c11f0baf2e1e2bde20978de54be9d372298dad8b4c3152c0be80e5e",
    "cross_cats_sorted": [
      "math.MG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2021-04-25T14:29:56Z",
    "title_canon_sha256": "bb23a5973689235b1603d04ec50303389dfb86eade84382a4bf26a605eed291c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.12172",
    "kind": "arxiv",
    "version": 1
  }
}