Pith Number

pith:QERSMAPN

pith:2022:QERSMAPNHBKM33DGYB3SMU5CLF

not attested not anchored not stored refs pending

Long-diagonal pentagram maps

Anton Izosimov, Boris Khesin

arxiv:2203.07578 v2 · 2022-03-15 · nlin.SI · math.MG · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QERSMAPNHBKM33DGYB3SMU5CLF}

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	2026-07-05T05:12:27.912878Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81232601ed3854cdec66c0772653a25978808b44f07602804efe0c2695ed8c13

Aliases

arxiv: 2203.07578 · arxiv_version: 2203.07578v2 · doi: 10.48550/arxiv.2203.07578 · pith_short_12: QERSMAPNHBKM · pith_short_16: QERSMAPNHBKM33DG · pith_short_8: QERSMAPN

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/QERSMAPNHBKM33DGYB3SMU5CLF \
  | 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: 81232601ed3854cdec66c0772653a25978808b44f07602804efe0c2695ed8c13

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c170c9fa64a2e2f2b14f4567e2c4e413dec8be7d9546160b084163dcf1e134b",
    "cross_cats_sorted": [
      "math.MG",
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.SI",
    "submitted_at": "2022-03-15T01:07:14Z",
    "title_canon_sha256": "2853eaec089a73937c36fa70743c8c0cbee3257fe7a76929ec39c799443d4331"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2203.07578",
    "kind": "arxiv",
    "version": 2
  }
}