Pith Number

pith:YLWAA6SM

pith:1997:YLWAA6SMG7KK3TGW3S7FA4SYWU

not attested not anchored not stored refs pending

Quantum Mechanically Induced Hopf Term in the O(3) Nonlinear Sigma Model

Hiroyuki Kobayashi, Izumi Tsutsui, Shogo Tanimura

arxiv:hep-th/9705183 v2 · 1997-05-23 · hep-th · cond-mat

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YLWAA6SMG7KK3TGW3S7FA4SYWU}

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	2026-07-04T16:05:36.136750Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c2ec007a4c37d4adccd6dcbe507258b52240f78d80c52748492537872f30549f

Aliases

arxiv: hep-th/9705183 · arxiv_version: hep-th/9705183v2 · doi: 10.48550/arxiv.hep-th/9705183 · pith_short_12: YLWAA6SMG7KK · pith_short_16: YLWAA6SMG7KK3TGW · pith_short_8: YLWAA6SM

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/YLWAA6SMG7KK3TGW3S7FA4SYWU \
  | 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: c2ec007a4c37d4adccd6dcbe507258b52240f78d80c52748492537872f30549f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f158543fa1633f281b66b397fb224578fd8bf9945eb37837e883e821d1f2b6cc",
    "cross_cats_sorted": [
      "cond-mat"
    ],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "1997-05-23T10:38:37Z",
    "title_canon_sha256": "3cc2117addfbfa84816b19c30fbbfde828776cbe634dc395a5ee7d3bda11e294"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/9705183",
    "kind": "arxiv",
    "version": 2
  }
}