Pith Number

pith:77Z7YIUD

pith:2017:77Z7YIUD3CT6UZ24IZUFXQ3WOJ

not attested not anchored not stored refs pending

On Solving the Quadratic Shortest Path Problem

Hao Hu, Renata Sotirov

arxiv:1708.06580 v1 · 2017-08-22 · math.OC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{77Z7YIUD3CT6UZ24IZUFXQ3WOJ}

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	2026-05-18T00:37:33.103899Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fff3fc2283d8a7ea675c46685bc3767254ee7ed080dcd473ff31ee1ab8cd99b5

Aliases

arxiv: 1708.06580 · arxiv_version: 1708.06580v1 · doi: 10.48550/arxiv.1708.06580 · pith_short_12: 77Z7YIUD3CT6 · pith_short_16: 77Z7YIUD3CT6UZ24 · pith_short_8: 77Z7YIUD

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/77Z7YIUD3CT6UZ24IZUFXQ3WOJ \
  | 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: fff3fc2283d8a7ea675c46685bc3767254ee7ed080dcd473ff31ee1ab8cd99b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "74e306c648a4c0a18cfd0f7739a8648f998e436a5dfc39205b6f96ab59255fc6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2017-08-22T12:23:06Z",
    "title_canon_sha256": "18df8268bee8c154623d8f0301b3bb867c0bc80f90d4b54f5194f55b80af928a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.06580",
    "kind": "arxiv",
    "version": 1
  }
}