Pith Number

pith:NJ3NAEHT

pith:2016:NJ3NAEHTHBFI5UW2SJWZ22UWQK

not attested not anchored not stored refs pending

Topological Hopf-Chern Insulators and the Hopf Superconductor

Ricardo Kennedy

arxiv:1604.02840 v1 · 2016-04-11 · cond-mat.mes-hall · 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{NJ3NAEHTHBFI5UW2SJWZ22UWQK}

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	2026-05-18T01:10:24.425780Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a76d010f3384a8ed2da926d9d6a9682ac8ac969c2d6e907dafa3c86f11696a6

Aliases

arxiv: 1604.02840 · arxiv_version: 1604.02840v1 · doi: 10.48550/arxiv.1604.02840 · pith_short_12: NJ3NAEHTHBFI · pith_short_16: NJ3NAEHTHBFI5UW2 · pith_short_8: NJ3NAEHT

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/NJ3NAEHTHBFI5UW2SJWZ22UWQK \
  | 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: 6a76d010f3384a8ed2da926d9d6a9682ac8ac969c2d6e907dafa3c86f11696a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d06c37d791ea0932eeb87731bb0726fb8e2b7bfce857141ddd59cac37ea24d93",
    "cross_cats_sorted": [
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mes-hall",
    "submitted_at": "2016-04-11T08:51:51Z",
    "title_canon_sha256": "3d4371498b1df8ca95996fc7077b83c7bc11675859faac5104cc3ef83939f69c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.02840",
    "kind": "arxiv",
    "version": 1
  }
}