Pith Number

pith:YBTRBFPT

pith:2013:YBTRBFPTAPZIH26PIBNZOF6HOJ

not attested not anchored not stored refs pending

Period-index and u-invariant questions for function fields over complete discretely valued fields

R. Parimala, V. Suresh

arxiv:1304.2214 v1 · 2013-04-08 · 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{YBTRBFPTAPZIH26PIBNZOF6HOJ}

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	2026-05-18T01:50:41.630705Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0671095f303f283ebcf405b9717c772576a850098c573daea38d65c2e06d869

Aliases

arxiv: 1304.2214 · arxiv_version: 1304.2214v1 · doi: 10.48550/arxiv.1304.2214 · pith_short_12: YBTRBFPTAPZI · pith_short_16: YBTRBFPTAPZIH26P · pith_short_8: YBTRBFPT

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/YBTRBFPTAPZIH26PIBNZOF6HOJ \
  | 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: c0671095f303f283ebcf405b9717c772576a850098c573daea38d65c2e06d869

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "253e523d68938e7bc9082cf7c174d87b39aeff2fcf74506f1b90421d1a033073",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2013-04-08T14:18:34Z",
    "title_canon_sha256": "7360856be913e96c41cda8e712a494ef87a5b7e810a75ca6b8ba222e4d3b9394"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.2214",
    "kind": "arxiv",
    "version": 1
  }
}