Pith Number

pith:ZP4S2IMF

pith:2020:ZP4S2IMFO5W6KJR5TBPJV6WDTX

not attested not anchored not stored refs pending

Unipotent extensions and differential equations (after Bloch-Vlasenko)

Matt Kerr

arxiv:2008.03618 v1 · 2020-08-08 · math.AG · 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{ZP4S2IMFO5W6KJR5TBPJV6WDTX}

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	2026-07-05T01:25:43.655819Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cbf92d2185776de5263d985e9afac39dfc409bd4782f00cf6ae50f338d19b261

Aliases

arxiv: 2008.03618 · arxiv_version: 2008.03618v1 · doi: 10.48550/arxiv.2008.03618 · pith_short_12: ZP4S2IMFO5W6 · pith_short_16: ZP4S2IMFO5W6KJR5 · pith_short_8: ZP4S2IMF

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/ZP4S2IMFO5W6KJR5TBPJV6WDTX \
  | 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: cbf92d2185776de5263d985e9afac39dfc409bd4782f00cf6ae50f338d19b261

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c7010b3137e036068e0cdf48e1d0db74f5a2d168ed06915caf5c9941c1654ae",
    "cross_cats_sorted": [
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2020-08-08T23:04:26Z",
    "title_canon_sha256": "53228ad4054d28a30be3ede2f72d2319a3f1932dcb41446f65c0535b23b0638e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2008.03618",
    "kind": "arxiv",
    "version": 1
  }
}