Pith Number

pith:WJ7O5TR7

pith:2017:WJ7O5TR7DHC2EZLFPGXNAYIQFG

not attested not anchored not stored refs pending

On the Mod-2 Cohomology of SL 3 (z[ 1 2 , i])

Hans-Werner Henn (IRMA)

arxiv:1702.05032 v3 · 2017-02-16 · 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{WJ7O5TR7DHC2EZLFPGXNAYIQFG}

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	2026-05-17T23:58:05.589291Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b27eeece3f19c5a2656579aed0611029b09b14493df330b86f280cec733a48eb

Aliases

arxiv: 1702.05032 · arxiv_version: 1702.05032v3 · doi: 10.48550/arxiv.1702.05032 · pith_short_12: WJ7O5TR7DHC2 · pith_short_16: WJ7O5TR7DHC2EZLF · pith_short_8: WJ7O5TR7

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/WJ7O5TR7DHC2EZLFPGXNAYIQFG \
  | 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: b27eeece3f19c5a2656579aed0611029b09b14493df330b86f280cec733a48eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1eb5e587e9c78f84e3443faae6cb606a197fe3179e95692d40e7e62831b1b0e3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2017-02-16T16:10:16Z",
    "title_canon_sha256": "bea50983aa422647c8d800aa323a9bb80331faf26cbaf14d05bc4a2ba8ed030c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.05032",
    "kind": "arxiv",
    "version": 3
  }
}