Pith Number

pith:B72IGKFF

pith:2015:B72IGKFFEXIA33HHZEGYTRUSWG

not attested not anchored not stored refs pending

A geometric approach to constructing elements of $K_2$ of curves

J. Steffen M\"uller, Ulf K\"uhn

arxiv:1504.01755 v1 · 2015-04-07 · math.AG · math.KT · 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{B72IGKFFEXIA33HHZEGYTRUSWG}

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	2026-05-18T02:19:26.093017Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ff48328a525d00dece7c90d89c692b1a57afbe4520e0b6336e33c6b3772c95c

Aliases

arxiv: 1504.01755 · arxiv_version: 1504.01755v1 · doi: 10.48550/arxiv.1504.01755 · pith_short_12: B72IGKFFEXIA · pith_short_16: B72IGKFFEXIA33HH · pith_short_8: B72IGKFF

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/B72IGKFFEXIA33HHZEGYTRUSWG \
  | 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: 0ff48328a525d00dece7c90d89c692b1a57afbe4520e0b6336e33c6b3772c95c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "195b249418bd827fd3416f81acba7e0f633e346e7262af6fdb6c56043bdb2f2b",
    "cross_cats_sorted": [
      "math.KT",
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2015-04-07T21:10:10Z",
    "title_canon_sha256": "939c90fef77eae84a1a0d59f94d1afb85687fc50b0574ca13a2e1fa3336c1fb7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.01755",
    "kind": "arxiv",
    "version": 1
  }
}