Pith Number

pith:Z6QZSS5F

pith:2015:Z6QZSS5FJVAXMHEWJT3WZ7FPQW

not attested not anchored not stored refs pending

On reflective subcategories of locally presentable categories

Jiri Adamek, Jiri Rosicky

arxiv:1504.03886 v2 · 2015-04-15 · math.CT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Z6QZSS5FJVAXMHEWJT3WZ7FPQW}

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	2026-05-18T02:03:32.756862Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cfa1994ba54d41761c964cf76cfcaf85b3404f2e98846aaff8290cf4f7a22863

Aliases

arxiv: 1504.03886 · arxiv_version: 1504.03886v2 · doi: 10.48550/arxiv.1504.03886 · pith_short_12: Z6QZSS5FJVAX · pith_short_16: Z6QZSS5FJVAXMHEW · pith_short_8: Z6QZSS5F

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/Z6QZSS5FJVAXMHEWJT3WZ7FPQW \
  | 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: cfa1994ba54d41761c964cf76cfcaf85b3404f2e98846aaff8290cf4f7a22863

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7a0f07f946d9f72d57d46199820a8eabd9cdb30f7a538218e73c648520f618cd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CT",
    "submitted_at": "2015-04-15T12:33:43Z",
    "title_canon_sha256": "5ea703e307c29c3b7388abe2dfb8b5822b6d30875c8e3e8ccb6614e2b3a398c0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.03886",
    "kind": "arxiv",
    "version": 2
  }
}