Pith Number

pith:D2CCWVVD

pith:2009:D2CCWVVDI54DLVKGISQPI5GYMT

not attested not anchored not stored refs pending

On the (semi)lattices induced by continuous reducibilities

Arno Pauly

arxiv:0903.2177 v2 · 2009-03-12 · cs.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{D2CCWVVDI54DLVKGISQPI5GYMT}

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	2026-05-18T04:38:59.378044Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1e842b56a3477835d54644a0f474d864df3611d48b6f2af841ca766c9381ba2f

Aliases

arxiv: 0903.2177 · arxiv_version: 0903.2177v2 · doi: 10.48550/arxiv.0903.2177 · pith_short_12: D2CCWVVDI54D · pith_short_16: D2CCWVVDI54DLVKG · pith_short_8: D2CCWVVD

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/D2CCWVVDI54DLVKGISQPI5GYMT \
  | 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: 1e842b56a3477835d54644a0f474d864df3611d48b6f2af841ca766c9381ba2f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9adb8a8bdc5d078001f411a2638ec1eec40df18b42cbd8005401a1f1b16eb7a6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2009-03-12T14:34:47Z",
    "title_canon_sha256": "eff5fa44066ff2457684ae273360e18e02cbae57b9cff3b3ad45a9bc6ec82fa7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.2177",
    "kind": "arxiv",
    "version": 2
  }
}