Pith Number

pith:RXC4Z7TY

pith:2017:RXC4Z7TYJOXCSIIIUE67LR4VCY

not attested not anchored not stored refs pending

Rigidity of length-angle spectrum for closed hyperbolic surfaces

Sugata Mondal

arxiv:1701.08829 v1 · 2017-01-30 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RXC4Z7TYJOXCSIIIUE67LR4VCY}

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	2026-05-18T00:51:39.098300Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8dc5ccfe784bae292108a13df5c7951622b951948c96e6e0d75cbc2531a3720b

Aliases

arxiv: 1701.08829 · arxiv_version: 1701.08829v1 · doi: 10.48550/arxiv.1701.08829 · pith_short_12: RXC4Z7TYJOXC · pith_short_16: RXC4Z7TYJOXCSIII · pith_short_8: RXC4Z7TY

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/RXC4Z7TYJOXCSIIIUE67LR4VCY \
  | 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: 8dc5ccfe784bae292108a13df5c7951622b951948c96e6e0d75cbc2531a3720b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "886250a2acec1ba02715488e4f9079711c6cd4cbc91665fb89cf5ccefe2cd65c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2017-01-30T21:14:07Z",
    "title_canon_sha256": "52043e9889da9baf7cdcb67dc28ed29aadfcb1b04b0bf6cad78d85f843b1ccfc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1701.08829",
    "kind": "arxiv",
    "version": 1
  }
}