Pith Number

pith:BD2DB5DU

pith:2009:BD2DB5DU4RI5DO5QLTLAF55CQC

not attested not anchored not stored refs pending

Classification of Topological Insulators and Superconductors

Akira Furusaki, Andreas P. Schnyder, Andreas W. W. Ludwig, Shinsei Ryu

arxiv:0905.2029 v1 · 2009-05-13 · cond-mat.mes-hall · cond-mat.str-el

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BD2DB5DU4RI5DO5QLTLAF55CQC}

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	2026-05-18T02:13:39.729985Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

08f430f474e451d1bbb05cd602f7a2808c627a543b27263a0fb7abc9c8c63380

Aliases

arxiv: 0905.2029 · arxiv_version: 0905.2029v1 · doi: 10.48550/arxiv.0905.2029 · pith_short_12: BD2DB5DU4RI5 · pith_short_16: BD2DB5DU4RI5DO5Q · pith_short_8: BD2DB5DU

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/BD2DB5DU4RI5DO5QLTLAF55CQC \
  | 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: 08f430f474e451d1bbb05cd602f7a2808c627a543b27263a0fb7abc9c8c63380

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "622897f16f722994e9eb5ffcb70607238984799992d175156b36a16079719253",
    "cross_cats_sorted": [
      "cond-mat.str-el"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cond-mat.mes-hall",
    "submitted_at": "2009-05-13T07:40:09Z",
    "title_canon_sha256": "75c1b4ee2549a910a6ffd9a3aff653a1779b758d2161e42f52395c1b07e5afb2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0905.2029",
    "kind": "arxiv",
    "version": 1
  }
}