Pith Number

pith:CGQX2KXX

pith:2019:CGQX2KXXJK4CK4CQ6FND3J65RO

not attested not anchored not stored refs pending

Une invitation aux surfaces de dilatation

Selim Ghazouani

arxiv:1901.08856 v1 · 2019-01-25 · math.DS · 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{CGQX2KXXJK4CK4CQ6FND3J65RO}

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	2026-05-17T23:55:32.895196Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

11a17d2af74ab8257050f15a3da7dd8b942fa18ad11fc5eb1c5e668b1e3b95c9

Aliases

arxiv: 1901.08856 · arxiv_version: 1901.08856v1 · doi: 10.48550/arxiv.1901.08856 · pith_short_12: CGQX2KXXJK4C · pith_short_16: CGQX2KXXJK4CK4CQ · pith_short_8: CGQX2KXX

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/CGQX2KXXJK4CK4CQ6FND3J65RO \
  | 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: 11a17d2af74ab8257050f15a3da7dd8b942fa18ad11fc5eb1c5e668b1e3b95c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75f9e7f5c03b3729a3a3bf2d27c11ac4721e7e7e90605588cdd9be165cfdf7ff",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2019-01-25T12:53:03Z",
    "title_canon_sha256": "f566fb635a453314c5c5be259cf920f9652295b1aa814d83b09b0d00f09cb019"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.08856",
    "kind": "arxiv",
    "version": 1
  }
}