Pith Number

pith:TDA6Z3QT

pith:2016:TDA6Z3QTVYGTDVJF64FXFJ5UI4

not attested not anchored not stored refs pending

On Natural Deduction for Herbrand Constructive Logics II: Curry-Howard Correspondence for Markov's Principle in First-Order Logic and Arithmetic

Federico Aschieri, Matteo Manighetti

arxiv:1612.05457 v2 · 2016-12-16 · 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{TDA6Z3QTVYGTDVJF64FXFJ5UI4}

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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	2026-05-18T00:01:10.645571Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

98c1ecee13ae0d31d525f70b72a7b44718f87802521917190716b7f714858854

Aliases

arxiv: 1612.05457 · arxiv_version: 1612.05457v2 · doi: 10.48550/arxiv.1612.05457 · pith_short_12: TDA6Z3QTVYGT · pith_short_16: TDA6Z3QTVYGTDVJF · pith_short_8: TDA6Z3QT

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/TDA6Z3QTVYGTDVJF64FXFJ5UI4 \
  | 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: 98c1ecee13ae0d31d525f70b72a7b44718f87802521917190716b7f714858854

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d849a62b338655cf8bc86b6fe041327dfebdca2504696d0ac7a781bf9647485a",
    "cross_cats_sorted": [
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2016-12-16T13:22:27Z",
    "title_canon_sha256": "221071c10587e14071f53b313373c6753547ced3c0a0ed47878c358e8fb2e925"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.05457",
    "kind": "arxiv",
    "version": 2
  }
}