Pith Number

pith:UYJ73O25

pith:2026:UYJ73O25SWPMZQOH2OX5IRCYZG

not attested not anchored not stored refs pending

Uniform interpolation with constructive diamond

Ian Shillito, Iris van der Giessen

arxiv:2602.16880 v2 · 2026-02-18 · cs.LO · math.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UYJ73O25SWPMZQOH2OX5IRCYZG}

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.

Cited by

1 paper in Pith

Fischer-Servi logic does not have interpolation

Receipt and verification

First computed	2026-05-28T02:04:46.383603Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a613fdbb5d959eccc1c7d3afd44458c9a8695e12e6df5fce65772ce57be81f43

Aliases

arxiv: 2602.16880 · arxiv_version: 2602.16880v2 · doi: 10.48550/arxiv.2602.16880 · pith_short_12: UYJ73O25SWPM · pith_short_16: UYJ73O25SWPMZQOH · pith_short_8: UYJ73O25

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/UYJ73O25SWPMZQOH2OX5IRCYZG \
  | 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: a613fdbb5d959eccc1c7d3afd44458c9a8695e12e6df5fce65772ce57be81f43

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8d86fa965b81323b14ee89cf1c6de749f4238b34976a08d3f3f09cba3f539dd",
    "cross_cats_sorted": [
      "math.LO"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2026-02-18T21:03:44Z",
    "title_canon_sha256": "bd3f41e773bffc0a64661298ad4824ba5e416aba92d8e3010dfe8fb69623b91c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.16880",
    "kind": "arxiv",
    "version": 2
  }
}