Pith Number

pith:Y4WAGWGQ

pith:2017:Y4WAGWGQUSC65AGVEEMOVJCEPU

not attested not anchored not stored refs pending

Ext-algebras of graded skew extensions

G.-S. Zhou, X. Wang, Y. Shen

arxiv:1707.01610 v2 · 2017-07-06 · math.RA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Y4WAGWGQUSC65AGVEEMOVJCEPU}

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	2026-05-18T00:36:38.301497Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c72c0358d0a485ee80d52118eaa4447d007ba7caa97b72d5334f23e6a0d517f8

Aliases

arxiv: 1707.01610 · arxiv_version: 1707.01610v2 · doi: 10.48550/arxiv.1707.01610 · pith_short_12: Y4WAGWGQUSC6 · pith_short_16: Y4WAGWGQUSC65AGV · pith_short_8: Y4WAGWGQ

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/Y4WAGWGQUSC65AGVEEMOVJCEPU \
  | 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: c72c0358d0a485ee80d52118eaa4447d007ba7caa97b72d5334f23e6a0d517f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f5b2344dbc570bea03ef2f8729c94548d61920bfd79b75f07e848cf82f6e5fdd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2017-07-06T01:35:29Z",
    "title_canon_sha256": "7a92e2c96bf6509274d4b1de6842a184c63ce34fec030aae15541ca0de047d03"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.01610",
    "kind": "arxiv",
    "version": 2
  }
}