Pith Number

pith:EFWKI62D

pith:2015:EFWKI62DNDOJLMALNKFMHWGCRU

not attested not anchored not stored refs pending

On the Gross-Keating invariant of a quadratic form over a non-archimedean local field

Hidenori Katsurada, Tamotsu Ikeda

arxiv:1504.07330 v5 · 2015-04-28 · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EFWKI62DNDOJLMALNKFMHWGCRU}

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	2026-05-18T00:44:33.981480Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

216ca47b4368dc95b00b6a8ac3d8c28d23baf1fc9fe07370e6c648e20879c4db

Aliases

arxiv: 1504.07330 · arxiv_version: 1504.07330v5 · doi: 10.48550/arxiv.1504.07330 · pith_short_12: EFWKI62DNDOJ · pith_short_16: EFWKI62DNDOJLMAL · pith_short_8: EFWKI62D

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/EFWKI62DNDOJLMALNKFMHWGCRU \
  | 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: 216ca47b4368dc95b00b6a8ac3d8c28d23baf1fc9fe07370e6c648e20879c4db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86e55d5d08ff4541bc8999aab51a5143037f6e0c660dffe6884b5b999392fccd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2015-04-28T02:04:01Z",
    "title_canon_sha256": "3753475a7ac5feea6d7ebbf0fa91bcd5f481cc2207d21c8489a40b0d7720bb87"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.07330",
    "kind": "arxiv",
    "version": 5
  }
}