Pith Number

pith:UPMO6QQD

pith:2016:UPMO6QQDLLAHDRJIQKAYRHLKBQ

not attested not anchored not stored refs pending

Odd structures are odd

Martin Markl

arxiv:1603.03184 v2 · 2016-03-10 · math.AT · 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{UPMO6QQDLLAHDRJIQKAYRHLKBQ}

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	2026-05-18T01:08:28.748983Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3d8ef42035ac071c5288281889d6a0c2c32ffc502abd26e57cb6b5a9e907fbb

Aliases

arxiv: 1603.03184 · arxiv_version: 1603.03184v2 · doi: 10.48550/arxiv.1603.03184 · pith_short_12: UPMO6QQDLLAH · pith_short_16: UPMO6QQDLLAHDRJI · pith_short_8: UPMO6QQD

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/UPMO6QQDLLAHDRJIQKAYRHLKBQ \
  | 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: a3d8ef42035ac071c5288281889d6a0c2c32ffc502abd26e57cb6b5a9e907fbb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f030ce2cc0e9993c9f6c4c45761e747c84bdcc5425c6a1f17c7af94687806c87",
    "cross_cats_sorted": [
      "math.CT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2016-03-10T08:37:05Z",
    "title_canon_sha256": "6453ef8ded90d9461d1961e11a4ca0132dbcb17601c9f8d3280ea7f700cfa2ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.03184",
    "kind": "arxiv",
    "version": 2
  }
}