Pith Number

pith:N5M7AVHB

pith:2014:N5M7AVHBOPLTXHS6443AU3UMNN

not attested not anchored not stored refs pending

Witt's Extension Theorem for Quadratic Spaces over Semiperfect Rings

Uriya A. First

arxiv:1408.0522 v4 · 2014-08-03 · 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{N5M7AVHBOPLTXHS6443AU3UMNN}

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	2026-05-18T01:35:22.671110Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f59f054e173d73b9e5ee7360a6e8c6b527c6e0f2ba57ef3e1d967f8730435a1

Aliases

arxiv: 1408.0522 · arxiv_version: 1408.0522v4 · doi: 10.48550/arxiv.1408.0522 · pith_short_12: N5M7AVHBOPLT · pith_short_16: N5M7AVHBOPLTXHS6 · pith_short_8: N5M7AVHB

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/N5M7AVHBOPLTXHS6443AU3UMNN \
  | 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: 6f59f054e173d73b9e5ee7360a6e8c6b527c6e0f2ba57ef3e1d967f8730435a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ffde921439fcb1021e09a64af013b439384fff2a8e40eefe7eda807f61998d4f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2014-08-03T18:31:45Z",
    "title_canon_sha256": "c2c42363f43f2bb7948c424f9850602e5bb021f936ffb39dd3eeebc11477ba88"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.0522",
    "kind": "arxiv",
    "version": 4
  }
}