Pith Number

pith:UVQ27DOA

pith:2017:UVQ27DOAHLM4GDBTML3OJXRQKX

not attested not anchored not stored refs pending

Kernels for Noncommutative Projective Schemes

Blake A. Farman, Matthew R. Ballard

arxiv:1709.06470 v2 · 2017-09-19 · math.RA · math.AG · math.CT · math.QA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UVQ27DOAHLM4GDBTML3OJXRQKX}

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	2026-05-18T00:22:52.580030Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a561af8dc03ad9c30c3362f6e4de3055ec3cef7c08844b30688583afb0c7fa85

Aliases

arxiv: 1709.06470 · arxiv_version: 1709.06470v2 · doi: 10.48550/arxiv.1709.06470 · pith_short_12: UVQ27DOAHLM4 · pith_short_16: UVQ27DOAHLM4GDBT · pith_short_8: UVQ27DOA

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/UVQ27DOAHLM4GDBTML3OJXRQKX \
  | 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: a561af8dc03ad9c30c3362f6e4de3055ec3cef7c08844b30688583afb0c7fa85

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8fba84458d87d6bf3dc59cb9ec83cbdad53bd6139abb0a7be1d4733414812515",
    "cross_cats_sorted": [
      "math.AG",
      "math.CT",
      "math.QA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.RA",
    "submitted_at": "2017-09-19T14:54:06Z",
    "title_canon_sha256": "2a8852781b5d5ec8cced044b69090e097b71ce862e5d1e642f095f1dc93f7fa7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.06470",
    "kind": "arxiv",
    "version": 2
  }
}