Pith Number

pith:KW363EZR

pith:2019:KW363EZRPYA5IVQT5OCQOPSNZM

not attested not anchored not stored refs pending

Darboux and Calapso transforms of meromorphically isothermic surfaces

Andreas Fuchs

arxiv:1901.05774 v1 · 2019-01-17 · 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{KW363EZRPYA5IVQT5OCQOPSNZM}

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	2026-05-17T23:56:06.197230Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

55b7ed93317e01d45613eb85073e4dcb30730c95dbc7caefc27c2e53eb6ef985

Aliases

arxiv: 1901.05774 · arxiv_version: 1901.05774v1 · doi: 10.48550/arxiv.1901.05774 · pith_short_12: KW363EZRPYA5 · pith_short_16: KW363EZRPYA5IVQT · pith_short_8: KW363EZR

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/KW363EZRPYA5IVQT5OCQOPSNZM \
  | 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: 55b7ed93317e01d45613eb85073e4dcb30730c95dbc7caefc27c2e53eb6ef985

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67ea02244f7172700bcf4e35a6970883752e65b6dd146b0fb17160b1a4775e5f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2019-01-17T13:08:36Z",
    "title_canon_sha256": "eb566c68b5c4ee5d32399a2415e91e810e563f8bcc3833bbd7b6e5e40c63d16c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.05774",
    "kind": "arxiv",
    "version": 1
  }
}