Pith Number

pith:WSGNIUXO

pith:2025:WSGNIUXOSACWFLP7PZEWOCVXYG

not attested not anchored not stored refs pending

Non-periodic Boundary Conditions for Euler Class and Dynamical Signatures of Obstruction

Adrien Bouhon, F. Nur \"Unal, Osama A. Alsaiari, Robert-Jan Slager

arxiv:2507.22874 v1 · 2025-07-30 · cond-mat.quant-gas · cond-mat.mes-hall · physics.atom-ph · quant-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WSGNIUXOSACWFLP7PZEWOCVXYG}

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	2026-07-05T11:45:50.802550Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b48cd452ee900562adff7e49670ab7c1bdc9c5bc3322a1d4a9249c5264c1c1ae

Aliases

arxiv: 2507.22874 · arxiv_version: 2507.22874v1 · doi: 10.48550/arxiv.2507.22874 · pith_short_12: WSGNIUXOSACW · pith_short_16: WSGNIUXOSACWFLP7 · pith_short_8: WSGNIUXO

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/WSGNIUXOSACWFLP7PZEWOCVXYG \
  | 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: b48cd452ee900562adff7e49670ab7c1bdc9c5bc3322a1d4a9249c5264c1c1ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74651b08dff3a013b6538711f3db1b61565e377d38d4d7fae1d338c7ffb0f83b",
    "cross_cats_sorted": [
      "cond-mat.mes-hall",
      "physics.atom-ph",
      "quant-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cond-mat.quant-gas",
    "submitted_at": "2025-07-30T17:49:19Z",
    "title_canon_sha256": "201a3f62145cc8e52814912509c4ebda50ec8ab28ca545d5a2c379355e20e377"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.22874",
    "kind": "arxiv",
    "version": 1
  }
}