Pith Number

pith:KFIQZLFO

pith:2026:KFIQZLFODNYBHJE26CDKG4CWCJ

not attested not anchored not stored refs pending

Multicategorical Semantics for Untyped Effects

Ariel Grunfeld, Liron Cohen

arxiv:2605.21337 v1 · 2026-05-20 · cs.PL · 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{KFIQZLFODNYBHJE26CDKG4CWCJ}

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	2026-05-21T02:05:29.799662Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51510cacae1b7013a49af086a37056127b5c2ce69f06c6d0bb34f070eea0da23

Aliases

arxiv: 2605.21337 · arxiv_version: 2605.21337v1 · doi: 10.48550/arxiv.2605.21337 · pith_short_12: KFIQZLFODNYB · pith_short_16: KFIQZLFODNYBHJE2 · pith_short_8: KFIQZLFO

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/KFIQZLFODNYBHJE26CDKG4CWCJ \
  | 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: 51510cacae1b7013a49af086a37056127b5c2ce69f06c6d0bb34f070eea0da23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90c85c2504b47bf1f1ceb0c9f86e6b39ea9138539321e92e7a3054307bc0cd6d",
    "cross_cats_sorted": [
      "math.CT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2026-05-20T16:03:31Z",
    "title_canon_sha256": "0ed78a930f407acbe9da16f81ace8c8d0270f08d26db8bc6c9b9d09f1781f918"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.21337",
    "kind": "arxiv",
    "version": 1
  }
}