Pith Number

pith:EZLUVIYL

pith:2013:EZLUVIYLGCYQVTVA2WDQTXHPYR

not attested not anchored not stored refs pending

On the autonomous metric on groups of Hamiltonian diffeomorphisms of closed hyperbolic surfaces

Michael Brandenbursky

arxiv:1305.2757 v4 · 2013-05-13 · math.GT · 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{EZLUVIYLGCYQVTVA2WDQTXHPYR}

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	2026-05-18T02:50:43.080338Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26574aa30b30b10acea0d58709dcefc462cfad222baea15bf2eb8041a1f35d39

Aliases

arxiv: 1305.2757 · arxiv_version: 1305.2757v4 · doi: 10.48550/arxiv.1305.2757 · pith_short_12: EZLUVIYLGCYQ · pith_short_16: EZLUVIYLGCYQVTVA · pith_short_8: EZLUVIYL

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/EZLUVIYLGCYQVTVA2WDQTXHPYR \
  | 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: 26574aa30b30b10acea0d58709dcefc462cfad222baea15bf2eb8041a1f35d39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "edcb1106c6575966203bf9af0027c7be5433402212f34969cf9e9f17805aca2e",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2013-05-13T12:31:21Z",
    "title_canon_sha256": "8d9c1c07fe5ba2039490b0a9cbe2fcc21270fb8c08526dd2e0dbf3d72b89700e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.2757",
    "kind": "arxiv",
    "version": 4
  }
}