Pith Number

pith:XU7IUJWQ

pith:2017:XU7IUJWQ4U4IA6MWYM4INS3AQT

not attested not anchored not stored refs pending

Motivic equivalence of affine quadrics

Alexander Vishik, Tom Bachmann

arxiv:1707.08087 v2 · 2017-07-25 · math.AG · math.KT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XU7IUJWQ4U4IA6MWYM4INS3AQT}

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	2026-05-18T00:25:41.968386Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bd3e8a26d0e538807996c33886cb6084c6d3d35c9f64967fe1b3b26d572c85c8

Aliases

arxiv: 1707.08087 · arxiv_version: 1707.08087v2 · doi: 10.48550/arxiv.1707.08087 · pith_short_12: XU7IUJWQ4U4I · pith_short_16: XU7IUJWQ4U4IA6MW · pith_short_8: XU7IUJWQ

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/XU7IUJWQ4U4IA6MWYM4INS3AQT \
  | 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: bd3e8a26d0e538807996c33886cb6084c6d3d35c9f64967fe1b3b26d572c85c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "903fa380807916f14bedd82e9c68459dc6af15c52432bf8a53e58d9a3bb640d5",
    "cross_cats_sorted": [
      "math.KT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2017-07-25T16:58:01Z",
    "title_canon_sha256": "50ed37866e62c73f771d0dd12c46e7c86a99bc30c095140729c24368302c1694"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.08087",
    "kind": "arxiv",
    "version": 2
  }
}