Pith Number

pith:AMGUPCHW

pith:2012:AMGUPCHWN3BGIDIQKV2EAFHGQ2

not attested not anchored not stored refs pending

Nonlocal symmetries related to B\"acklund transformation and their applications

S. Y. Lou, Xiaorui Hu, Yong Chen

arxiv:1201.3409 v1 · 2012-01-17 · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AMGUPCHWN3BGIDIQKV2EAFHGQ2}

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	2026-05-18T04:04:29.421215Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

030d4788f66ec2640d1055744014e68680125b291bc17b949a35498e990508e5

Aliases

arxiv: 1201.3409 · arxiv_version: 1201.3409v1 · doi: 10.48550/arxiv.1201.3409 · pith_short_12: AMGUPCHWN3BG · pith_short_16: AMGUPCHWN3BGIDIQ · pith_short_8: AMGUPCHW

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/AMGUPCHWN3BGIDIQKV2EAFHGQ2 \
  | 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: 030d4788f66ec2640d1055744014e68680125b291bc17b949a35498e990508e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd227cb2d1e3db892fb438f7faaeff2acc2bd38e414535a00ec34ebaf0084447",
    "cross_cats_sorted": [
      "math.MP"
    ],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2012-01-17T01:43:28Z",
    "title_canon_sha256": "4cb40c735ca830ad0de609b9c4a76f73cdb8bd148d3f672b36c903b1b87f99cc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.3409",
    "kind": "arxiv",
    "version": 1
  }
}