Pith Number

pith:5OCPMD5F

pith:2019:5OCPMD5FBRRWBXQPV4PBXC3NPA

not attested not anchored not stored refs pending

Hopf-theoretic approach to motives of twisted flag varieties

Nikita Semenov, Victor Petrov

arxiv:1908.08770 v2 · 2019-08-23 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5OCPMD5FBRRWBXQPV4PBXC3NPA}

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	2026-07-05T02:54:09.931385Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eb84f60fa50c6360de0faf1e1b8b6d783a0a4c1f53dde84762b4dff68b2757ca

Aliases

arxiv: 1908.08770 · arxiv_version: 1908.08770v2 · doi: 10.48550/arxiv.1908.08770 · pith_short_12: 5OCPMD5FBRRW · pith_short_16: 5OCPMD5FBRRWBXQP · pith_short_8: 5OCPMD5F

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/5OCPMD5FBRRWBXQPV4PBXC3NPA \
  | 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: eb84f60fa50c6360de0faf1e1b8b6d783a0a4c1f53dde84762b4dff68b2757ca

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed893bc4539288658cf1a49965daeab8f31d9f3939fe7eeda224f2b538e1bc38",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2019-08-23T11:56:37Z",
    "title_canon_sha256": "68f0d929dfa4416e36a7c74e266c7787d77a4b116fcc3a1afa47995867451649"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.08770",
    "kind": "arxiv",
    "version": 2
  }
}