Pith Number

pith:G4VX37N3

pith:2021:G4VX37N3G7ZV27KMWGNAK7MEV5

not attested not anchored not stored refs pending

Dehn-Seidel twist, $C^0$ symplectic topology and barcodes

Alexandre Jannaud

arxiv:2101.07878 v2 · 2021-01-19 · 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{G4VX37N3G7ZV27KMWGNAK7MEV5}

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.

Cited by

1 paper in Pith

$C^0$-rigidity of the Hamiltonian diffeomorphism group of symplectic rational surfaces

Receipt and verification

First computed	2026-07-05T02:34:10.978709Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

372b7dfdbb37f35d7d4cb19a057d84af75bfb8831b3c6cafd87090994bc84b51

Aliases

arxiv: 2101.07878 · arxiv_version: 2101.07878v2 · doi: 10.48550/arxiv.2101.07878 · pith_short_12: G4VX37N3G7ZV · pith_short_16: G4VX37N3G7ZV27KM · pith_short_8: G4VX37N3

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/G4VX37N3G7ZV27KMWGNAK7MEV5 \
  | 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: 372b7dfdbb37f35d7d4cb19a057d84af75bfb8831b3c6cafd87090994bc84b51

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fab2058f199921080e7d9a3ef1b7448dc8c1122db4b1471652ff94c5deb9a5ec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2021-01-19T21:56:41Z",
    "title_canon_sha256": "b678a5d615abe561dac4b7231fd4923cc748c28eb519c0b033d66909d240286a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.07878",
    "kind": "arxiv",
    "version": 2
  }
}