Pith Number

pith:MCXPCTL6

pith:2008:MCXPCTL6JRMWIRWVSVVLLEUGWJ

not attested not anchored not stored refs pending

On Poncelet's maps

Anna Cima, Armengol Gasull, Victor Manosa

arxiv:0812.2588 v1 · 2008-12-13 · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MCXPCTL6JRMWIRWVSVVLLEUGWJ}

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	2026-05-18T04:32:53.594140Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

60aef14d7e4c596446d5956ab59286b25cc3e3444dd4febffe610315ca76a766

Aliases

arxiv: 0812.2588 · arxiv_version: 0812.2588v1 · doi: 10.48550/arxiv.0812.2588 · pith_short_12: MCXPCTL6JRMW · pith_short_16: MCXPCTL6JRMWIRWV · pith_short_8: MCXPCTL6

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/MCXPCTL6JRMWIRWVSVVLLEUGWJ \
  | 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: 60aef14d7e4c596446d5956ab59286b25cc3e3444dd4febffe610315ca76a766

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6b443a33f88358acb214f44e9e1872e1d52623b0bac2684b6ee465e8fb64872",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2008-12-13T22:59:45Z",
    "title_canon_sha256": "d0d1e5c2ddee89c49f5475d84b74974202c8cf2fc854835503225ee4eacdc8a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.2588",
    "kind": "arxiv",
    "version": 1
  }
}