Pith Number

pith:SQPRLAIO

pith:2018:SQPRLAIOHH24E3MOO3DHADS2LO

not attested not anchored not stored refs pending

Solving Tree Problems with Category Theory

Rafik Hadfi

arxiv:1810.07307 v1 · 2018-10-16 · cs.AI · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SQPRLAIOHH24E3MOO3DHADS2LO}

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	2026-05-18T00:02:58.879680Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

941f15810e39f5c26d8e76c6700e5a5b80fd8fdef04e754b4e56e04705e320c4

Aliases

arxiv: 1810.07307 · arxiv_version: 1810.07307v1 · doi: 10.48550/arxiv.1810.07307 · pith_short_12: SQPRLAIOHH24 · pith_short_16: SQPRLAIOHH24E3MO · pith_short_8: SQPRLAIO

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/SQPRLAIOHH24E3MOO3DHADS2LO \
  | 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: 941f15810e39f5c26d8e76c6700e5a5b80fd8fdef04e754b4e56e04705e320c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b7e6ead0e5f41219ca542e4784828d1f9e6f6535a2b0918239a224c7bda1f1f",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2018-10-16T23:06:48Z",
    "title_canon_sha256": "08511d772bb2c46be08ee1efdc40b959f2c81dee85c24c31f25419eea52d32c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.07307",
    "kind": "arxiv",
    "version": 1
  }
}