Pith Number

pith:G7TJEDS2

pith:2015:G7TJEDS26V57L4LLVJ3KIDRHXK

not attested not anchored not stored refs pending

On the H-Free Extension Complexity of the TSP

David Avis, Hans Raj Tiwary

arxiv:1506.08311 v2 · 2015-06-27 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{G7TJEDS26V57L4LLVJ3KIDRHXK}

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	2026-05-18T01:26:57.513308Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

37e6920e5af57bf5f16baa76a40e27ba9b7360e97a4b4475e239e3b68c2b6eb4

Aliases

arxiv: 1506.08311 · arxiv_version: 1506.08311v2 · doi: 10.48550/arxiv.1506.08311 · pith_short_12: G7TJEDS26V57 · pith_short_16: G7TJEDS26V57L4LL · pith_short_8: G7TJEDS2

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/G7TJEDS26V57L4LLVJ3KIDRHXK \
  | 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: 37e6920e5af57bf5f16baa76a40e27ba9b7360e97a4b4475e239e3b68c2b6eb4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7d88dc2cce23cf5af3f9aa25e284df876e4972829e297f766b2049ddefe3b90f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2015-06-27T16:56:56Z",
    "title_canon_sha256": "55fad4801f5058f417806ce89fb63346b6f4a9e45cf3f68f9c5640184af71028"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1506.08311",
    "kind": "arxiv",
    "version": 2
  }
}