Pith Number

pith:VOFXUB2I

pith:2017:VOFXUB2IJ5JEKTMJS4ALKQEMRW

not attested not anchored not stored refs pending

Index of Dirac operators and classification of topological insulators

\"Umit Ertem

arxiv:1709.01778 v2 · 2017-09-06 · math-ph · cond-mat.str-el · hep-th · 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{VOFXUB2IJ5JEKTMJS4ALKQEMRW}

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	2026-05-18T00:32:30.386188Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ab8b7a07484f52454d899700b5408c8d92a32a11accd4fe67487a8d7d9da3c29

Aliases

arxiv: 1709.01778 · arxiv_version: 1709.01778v2 · doi: 10.48550/arxiv.1709.01778 · pith_short_12: VOFXUB2IJ5JE · pith_short_16: VOFXUB2IJ5JEKTMJ · pith_short_8: VOFXUB2I

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/VOFXUB2IJ5JEKTMJS4ALKQEMRW \
  | 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: ab8b7a07484f52454d899700b5408c8d92a32a11accd4fe67487a8d7d9da3c29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1d8c5c17edfa60aebbd92cc6352d25ba48519ec2bddc54bdd9ebf24fffd61b9e",
    "cross_cats_sorted": [
      "cond-mat.str-el",
      "hep-th",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math-ph",
    "submitted_at": "2017-09-06T11:38:02Z",
    "title_canon_sha256": "4cce6ef9bc5ff248b107fd690de87f80bce2d594d68c0f4bd24c9b28b01989ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.01778",
    "kind": "arxiv",
    "version": 2
  }
}