Pith Number

pith:OFFUB7VY

pith:2011:OFFUB7VY7KHSHHWBJGLNOVFXBX

not attested not anchored not stored refs pending

Cohomology in electromagnetic modeling

Pawe{\l} D{\l}otko, Ruben Specogna

arxiv:1111.2374 v1 · 2011-11-10 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OFFUB7VY7KHSHHWBJGLNOVFXBX}

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	2026-05-18T04:08:34.328432Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

714b40feb8fa8f239ec14996d754b70df8a9f0fb1ea675d83faa8f5dc2fc1273

Aliases

arxiv: 1111.2374 · arxiv_version: 1111.2374v1 · doi: 10.48550/arxiv.1111.2374 · pith_short_12: OFFUB7VY7KHS · pith_short_16: OFFUB7VY7KHSHHWB · pith_short_8: OFFUB7VY

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/OFFUB7VY7KHSHHWBJGLNOVFXBX \
  | 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: 714b40feb8fa8f239ec14996d754b70df8a9f0fb1ea675d83faa8f5dc2fc1273

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d167d93df21b21c1364b0c5e9a95f506057a4683fc6ff6fb5c833b3db000ec8c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2011-11-10T00:23:32Z",
    "title_canon_sha256": "6991b2035007d306c1c13e0252c990b872a4a5577b20f22aae257a8e0f7af456"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.2374",
    "kind": "arxiv",
    "version": 1
  }
}